Question

\(2x+7=2^3\)

Answer 1

\(2x+7=2^3\\ 2x+7=8\\ 2x=8-7\\ 2x=1\\ x=1:2\\ x=\dfrac{1}{2}\\ Vậyx=\dfrac{1}{2}\)

Answer 2

2 x + 7 = 8

2x=8-7

2x=1

x= 1: 2

x=0.5

Answer 3

\(2x+7=2^3\)

\(2x+7=8\)

\(2x=8-7\)

\(2x=1\)

\(x=1:2\)

Vậy \(x=\dfrac{1}{2}=0.5\)

Answer 4

2\(x\) + 7 = 2\(^3\)

\(\Rightarrow\) 2\(x\) + 7 = 8

2\(x\) = 8 - 7

2\(x\) = 1

\(x\) = 1 : 2

\(x\) = \(\dfrac{1}{2}\) = 0,5