Question

Giúp với gấp lắm r 6.23 6.24

Answer 1

6.24:

\(A=\dfrac{-3}{11}-\dfrac{8}{11}+\dfrac{11}{8}-\dfrac{3}{8}=-1+1=0\)

6.23

a: \(=\dfrac{-5-7}{3}=\dfrac{-12}{3}=-4\)

b: \(=\dfrac{45-72}{54}=\dfrac{-27}{54}=-\dfrac{1}{2}\)

Answer 2

 B1a)2/3             b)-1/18