1) 5 + (-4) = 1

2) (-8) + 2 = -6

3) 8 + (-2) = 6

4) 11 + (-3) = 8

5) (-11) + 2 = -9

6) (-7) + 3 = -4

7) (-5) + 5 = 0

8) 11 + (-12) = -1

9) (-18) + 20 = 2

10) (15) + (-12) = 3

11) (-17) + 17 = 0

12) 16 + (-2) = 14

13) (30) + (-14) = 16

14) (-19) + 20 = 1

15) (-18) + 15 = -3

16) (10) + (-6) = 4

17) (-28) + 14 = -14

18) 15 + (-30) = -15

19) (15) + (-4) = 11

20) (-21) + 11 = -10

21) 8 + (-22) = -14

22) (-15) + 4 = -11

23) (-3) + 2 = -1

24) 17 + (-14) = 3

25) 17 + (-14) = 3

thế này đọc đc mới đỉnh

a) (-25)-(-17)+24-12

=(-25)+17+24-12

=(-25)+(17+24-12)

=(-25)+29

=29-25=4

b) 4.(15-18)-(3-5)3^2

=4.(-3)-2.9

=-12-18

=-(12+18)=-30

a/ 

(-25)-(-17)+24-12

= -8 + 12

= 4

b/

4.(15-18)-(3-5).3²

^{= 4.(-3)-(-2).9}

^{= -12 -  (-18)}

^{= 6}

Đáp Án

a)52:4x3+2x52

=13x3+2x52

=39+104

=143

b)5x42-18:32

=100-0.5625

=99.4375

của bạn nha

\(\dfrac{4}{5}\)+\(\dfrac{-5}{4}\)=\(\dfrac{0}{4}\)

\(\dfrac{-1}{3}\)+\(\dfrac{2}{5}-\dfrac{5}{6}\)=\(\dfrac{-10}{30}+\dfrac{12}{30}-\dfrac{25}{30}\)=\(\dfrac{-23}{30}\)

\(\dfrac{2}{3}-\dfrac{5}{7}.\dfrac{14}{25}\)=\(\dfrac{2}{3}-\dfrac{2}{5}\)=\(\dfrac{10}{15}-\dfrac{6}{15}\)=\(\dfrac{4}{15}\)

Gigachad cảm ơn bạn sai rồi

CHƯA SUY RA BÀ 1 MÀ MẤY THẰNG NHU NÀY

\(160-\left(2^3.5^2-6.25\right)\)

\(=160-\left(8.25-6.25\right)\)

\(=160-\left[\left(8-6\right).25\right]\)

\(=160-\left[2.25\right]\)

\(=160-50\)

\(=110\)

~ Hok tốt ~

a) \(18+25\times4-4^3\)

\(=18+100-64\)

\(=118-64\)

\(=54\)

b) \(275-\left(49+125\div5^3\right)\)

\(=275-\left(49+125\div125\right)\)

\(=275-\left(49+1\right)\)

\(=275-49-1\)

\(=226-1\)

\(=225\)

c) \(2015+\left(8\times15-\left(18-8\right)^2\right)\)

\(=2015+\left(8\times15-\left(10\right)^2\right)\)

\(=2015+\left(8\times15-100\right)\)

\(=2015+\left(120-100\right)\)

\(=2015+20\)

\(=2035\)

a: \(2\cdot25\cdot4\cdot50\)

\(=\left(2\cdot50\right)\cdot\left(25\cdot4\right)\)

\(=100\cdot100=10000\)

b: \(\left(-125\right)\cdot5\cdot\left(-16\right)\cdot\left(-8\right)\)

\(=-125\cdot5\cdot16\cdot8\)

\(=-\left(125\cdot8\right)\cdot\left(5\cdot16\right)\)

\(=-80\cdot1000=-80000\)

c: \(5^2\cdot3^3\cdot2\)

\(=25\cdot27\cdot2\)

\(=\left(25\cdot2\right)\cdot27=27\cdot50=1350\)

d: \(\left(-4\right)\cdot3^2\left(-5\right)^3\)

\(=\left(-4\right)\cdot\left(-125\right)\cdot9\)

\(=500\cdot9=4500\)

a) \(-12:\left(\frac{3}{4}-\frac{5}{6}\right)^2=-\frac{12}{\left(\frac{3}{4}-\frac{5}{6}\right)^2}=-\frac{12}{\frac{1}{12^2}}\)

\(=-\frac{12^2.12}{1}=12^2.12\)

\(=-12^3=--1728\)

b) \(\frac{7}{23}.\left[\left(-\frac{8}{6}\right)-\frac{45}{18}\right]=\frac{7}{23}.\left(-\frac{4}{3}-\frac{5}{2}\right)\)

\(=\frac{7}{23}.\left(-\frac{23}{6}\right)=-\frac{7}{23}.\frac{23}{6}\)

\(=-\frac{7}{6}\)