\(107-\left\{38+\left[7.3^2-24:6+\left(9-7\right)^3\right]\right\}:15\)

\(=107-\left\{38+\left[7.3^2-24:6+2^3\right]\right\}:15\)

\(=107-\left\{38+\left[7.3^2-4+2^3\right]\right\}:15\)

\(=107-\left\{38+\left[63-4+2^3\right]\right\}:15\)

\(=107-\left\{38+\left[59+2^3\right]\right\}:15\)

\(=107-\left\{38+67\right\}:15\)

\(=107-105:15\)

\(=107-7\)

\(=100\)

107 – {38 + [7.3² – 24 : 6+(9 – 7)³]}:15

= 107 - {38+ [7.3² - 24 : 6 + 2³ ]} : 15

= 107 - {38 + [ 7.9 - 24 : 6 + 8]} :15

= 107 - {38+[ 63 - 4 + 8]} : 15

= 107 - {38 + 67} : 15

= 107 - 105 : 15

= 107 - 7

= 100

17) 10 – [(8² – 48).5 + (2³.10 + 8)] : 28 - 7⁰

    = 10 - [(64 - 48).5 + (8.10 +8)] : 28 - 7⁰

    = 10 - [16.5 + 88] : 28 - 7⁰

    = 10 - [80 + 88] : 28 - 7⁰

    = 10 - 168 : 28 - 7⁰

    = 10 - 6 - 1

    = 3

nếu sai câu nào mong bạn thông cảm ^^

k)(-37)+14+26+37

=(-37)+37+14+26

=0+14+26

=40

l)15+23+(-25)+(-23)

=15+(-25)+23+(-23)

=-10+0

=-10

n)25+37-48-25-37

=25-25+37-37-48

=0+0-48

=-48

o)24.(16-5)-16.(24-5)

=24.16-24.5-16.24-16.5

=0-24.5-16.5

=0-(24-16).5

=0-8.5

=0-40

=-40

p)31.(-18)+31.(-81)-31

=31.(-18)+31.(-81)+31.(-1)

=31.[-18+(-81)+(-1)]

=31.(-100)

=-3100

q)-48+48.(-78)+48.(-21)

=48.(-1)+48.(-78)+48.(-21)

=48.[(-1)+(-78)+(-21)]

=48.(-100)

=-4800

r)(7.3-3):(-6)

=(7.3-1.3):(-6)

=(6.3):(-6)

=-3

s)-3.7-4.(-5)+1

=-21-(-20)+1

=-20-(-20)

=0

t(6.8-10:5)+3.(-7)

=(48-2)+(-21)

=46+(-21)

=25

Viết mỏi cả tay rồi.tick đi nhé

   \(3^{^{ }2}\) . 5 + 2³.10  - 81: 3

= 9.5 + 8.10 - 27

= 45 + 80 - 27

= 125 - 27

= 98 

\(3^2\cdot5+2^3\cdot10-81:3\)

\(=9\cdot5+8\cdot10-3^4:3\)

\(=40+80-3^3\)

\(=120-27\)

\(=93\)

\(10-\left[\left(8^2-48\right)\cdot5+\left(23\cdot10+8\right):28\right]\)

\(=10-\left[\left(64-48\right)\cdot5+\left(230+8\right):28\right]\)

\(=10-\left(16\cdot5+238:28\right)\)

\(=10-\left(80+\dfrac{17}{2}\right)\)
\(=10-80-\dfrac{17}{2}\)

\(=-17-\dfrac{17}{2}\)

\(=-17-8,5\)

\(=-25,5\)

a) (-37) + 14 + 26 + 37

= [(-37) + 37] + (14 + 26)

= 0 + 40 = 40

b) (-24) + 6 + 10 + 24

= [(-24) + 24] + (10 + 6)

= 0 + 16 = 16

c) 15 + 23 + (-25) + (-23)

= [15 + (-25)] + [23 + (-23)]

= (-10) + 0 = -10

d) 60 + 33 + (-50) + (-33)

= [60 + (-50)] + [33 + (-33)]

= 10 + 0 = 10

e) (-16) + (-209) + (-14) + 209

= [(-16)  + (-14)] + [(-209) + 209]

= (-30) + 0 = -30

f) \(-3^2+\left(-54\right)\div\left[\left(-2\right)^8+7\right]\times\left(-2\right)^2\\ =\left(-9\right)+\left(-54\right)\div263\times4\\ =\left(-9\right)+\dfrac{-216}{263}=\dfrac{-2583}{263}\)

a. \(\left[\left(-37\right)+37\right]+\left(14+16\right)\) = 30 

B. \(\left[\left(-24\right)+24\right]+\left(10+6\right)\) = 16

C. \(\left[\left(-23\right)+23\right]+\left(15-23\right)\)= -8

d. \(\left[33-33\right]+\left(60-50\right)\) = 10

e. \(\left(209-209\right)+\left(-16-14\right)\)= -30

a) 1125 - (374 + 1125) + (-65 + 374)

= 1125 - 374 - 1125 + (-65) + 374

= (1125 - 1125) + (-374 + 374) + (-65)

= 0 + 0 + (-65)

= -65

b) -23. 63 + 23 . 21 - 58 . 23

= 23 .(-63) + 23 . 21 - 58 . 23

= 23 . [(-63) + 21 - 58]

= 23 . (-100)

= -2300

c) -2003 + (-21 + 75 + 2003)

= -2003 + (-21) + 75 + 2003

= (-2003 + 2003) + (-21) + 75

= 0 + 54

= 54

d) 942 - 2567 + 2563 - 1942

= (942 - 1942) + (-2567 + 2563)

= -1000 + (-4)

= -1004

e) 12 - 12 + 11 + 10 - 9 + 8 - 7 + 5 - 4 + 3 + 2 - 1

= 0 + 11 + 1 + 1 + 1 + 3 + 1

= 18

1640

nha ban 

t i c k nha