Question

\(2^3+0,5x=1,5\)

Answer 1

\(2^3+0,5x=1,5\)

\(\Rightarrow8+0,5x=1,5\)

\(\Rightarrow0,5x=1,5-8=-6,5\)

\(\Rightarrow x=-6,5:0,5=-13\)

Answer 2

Ta có 2^3=8, 0,5=\(\dfrac{1}{2}\), 1,5=\(\dfrac{3}{2}\)

Nên 8+\(\dfrac{1}{2}x\)=\(\dfrac{3}{2}\)

suy ra \(\dfrac{1}{2}x=\dfrac{3}{2}-8=\dfrac{-13}{2}\)

nên x=\(\dfrac{-13}{2}\)chia cho \(\dfrac{1}{2}\)=-13

vậy x=-13

Answer 3

Ta có: 2³ =8

8+0,5x =1,5

0,5x =1,5-8

x = (-6,5):0,5

x = -13

Nhớ tick nha !