\(\text{ -(-23) + (-36) + |57| - (-29)}\)

\(23+\left(-36\right)+57+29\)

\(=\left(23+57\right)+\left(\left(-36\right)+29\right)\)

\(=100+\left(-7\right)\)

\(=93\)

học tốt

  -452 - (-67 + 75 - 425)

= -452 + 67 - 75 + 525

= 67 - 75

= -8

-452 - ( -67 + 75 - 425 )

= -452 - ( 8 - 425 )

= 452 - ( -417 )

= -35.

                 _Học tốt#

-17.(13+5) - 13.(17-2)

=-17.13+(-17).5-13.17+13.2

=-17.13+(-17).5 + 13 . (-17) + 13.2

=-17.(13+5+13) + 13.2 

=-17. 31 +26

=-501

\(a.13-18-\left(-42\right)-15\)

\(=-5-\left(-42\right)-15\)

\(=37-15\)

\(=22\)

\(b.\left(-8\right)^3:\left(-8^2\right)-8\)

\(=-8-8\)

\(=-16\)

a) 13 - 18 - ( - 42) - 15

= 13 - 18 + 42 - 15

=  - 5 + 37

= 22

b)  \(\left(-8\right)^3:\left(-8\right)^2-8\)

= - 8 - 8

= - 16

@@ Học tốt @@
## Chiyuki Fujito

\(4.5^5-32:2^4\)

\(=4.5^5-2^5:2^4\)

\(=4.5^5-2^1\)

\(=4.3125-2\)

\(=12500-2\)

\(=12498\)

học tốt

4.5⁵-32:2⁴= 4. 5 . 5⁴-2⁵ : 2⁴

                 = 20 . 5⁴ -2= 20.  625-2=12500-2=12498

1)

a) Bằng nhau.Vì\(\frac{-3}{5}=\frac{-9}{15}=\frac{9}{-15}=\frac{-9}{15}\)

b) Không bằng.Vì \(\frac{4}{3}=\frac{12}{9}>\frac{-12}{9}\)

2)

a).\(\frac{-2}{3}+\frac{4}{15}=\frac{-10}{15}+\frac{4}{15}=\frac{-6}{15}=-\frac{2}{5}\)

b) \(\frac{-9}{5}:\frac{3}{5}=\frac{-9}{5}x\frac{5}{3}=\frac{-45}{15}=-3\)

c) \(\frac{3}{7}x\frac{5}{11}+\frac{3}{7}x\frac{6}{11}=\frac{3}{7}x\left(\frac{5}{11}+\frac{6}{11}\right)=\frac{3}{7}x\frac{11}{11}=\frac{3}{7}x1=\frac{3}{7}\)

3)

a) 2x + 23 = 2016-(17+2016)

    2x + 23 = 2016-17 + 2016 -2016

    2x + 23 = 1999

    2x = 1976

      x = 988

b)

\(\frac{-2}{5}.x=2\)

\(x=2:\frac{-2}{5}\)

 \(x=-5\)

- Học Tốt -

2+2:2x2=4;...