Question

For what value of $\text{x}$is the following equation true?

$\text{12 - x = 18}$

Answer 1

The given equation is $\text{12 - x = 18}$

$\text{12 - x = 18}$

$\text{-x = 18 - 12}$

$\text{-x = 6}$

$\text{x = -6}$

When we put $\text{x = -6}$ in L.H.S of the equation $\text{12 - x = 18}$

$12-\mathrm{x}=12-(-6)=18$

$\mathrm{L}.\mathrm{H}.\mathrm{S}=\mathrm{R}.\mathrm{H}.\mathrm{S}$

Hence the value of $\text{x = -6}$ following equation is true.