1) (-37) + 14 + 26 + 37

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

= 0 + 40

= 40

2) (-24) + 6 + 10 + 24

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

= 0 + 16

= 16

3) 15 + 23 + (-25) + (-23)

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

= -10 + 0

= -10

4) 60 + 33 + (-50) + (-33)

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

= 10 + 0

= 10

giải:-25.15+35.70-55.25

=25.(-15)+35.70-55.25

=25(-15-55)+35.70

=25.(-70)+35.70

=-25.70+35.70

=70.(-25+35)

=70.10

=700

chúc bạn học giỏi

woa bài này mik hoc rồi

=(8 . 9^4+ 9^3 . 9 .5) : (9^2 . 10 - 9^2)

=(8 .9^4 + 9^4 . 5) : (9^2 - 10 - 9^2 . 1)

=9^4 . (8+5) : 9^2 . 9

=9^4 . 13 : 9^3

=9.13

=117

chắc chắn đúng vì bài nà mik học rồi dùng tuinhs chất kết hợp và ddooie chỗ

=-120+6*[-24]

=-144-120

=-264

\(-24.5+6.\left[\left(-15\right)-9\right]\\ =-24.5+6.\left(-24\right)\\ =-24.\left(5+6\right)\\ =-24.11\\ =-264\)

2. a) x + (-23) = (-100) + 77

1)

a: (36-16).(-5)+6.(-14-6)

=20.(-5)+6.(-20)

=20.(-5)+(-6).20

=20.(-5+-6)

=20.(-11)

=-220

2)

a/x+(-23)=(-100)+77

x+(-23)=-23

x=(-23)+(-23)

x=0

Vậy x=0

A=(25⁶+15⁶-10⁶):5⁶

A=(25⁶+15⁶-10⁶)=25⁶:5⁶

A=25⁶:5⁶

A=5⁶

\(A=\left(25^6+15^6-10^6\right)\div5^6\)

\(A=\left(25+15-10\right)^6\div\left(5^6\right)\)

\(A=30^6\div5^6\)

\(A=\left(30\div5\right)^6\)

\(A=6^6\)

a,\(\frac{7}{10}\cdot\frac{4}{9}+\frac{3}{10}\cdot\frac{4}{9}-1\frac{7}{9}\)

\(=\frac{14}{45}+\frac{2}{15}-\frac{16}{9}\)

\(=\frac{14}{45}+\frac{6}{45}-\frac{80}{45}\)

\(=\frac{-60}{45}=\frac{-4}{3}\)

b,\(\frac{-5}{6}+\frac{4}{9}\cdot\left(\frac{5}{4}-\frac{2}{3}\right)\cdot\left(-3\right)^2+\frac{5}{9}\cdot30\%\)

\(=\frac{-5}{6}+\frac{4}{9}\cdot\left(\frac{7}{12}\right)\cdot9+\frac{5}{9}\cdot\frac{3}{10}\)

\(=\frac{-5}{6}+\frac{7}{3}+\frac{1}{6}\)

\(=\frac{-5}{6}+\frac{14}{6}+\frac{1}{6}\)

=\(=\frac{10}{6}=\frac{5}{3}\)

a) 45 - |-15| : 3 = 45 - 15 : 3 = 45 - 5 = 40

b) 737737.255 - 255255.737 = (737.1001).255 - 255255.737 = 737.(1001.255) - 255255.737 = 737.255255 - 255255.737 = 0