Verifying Solutions 1

$x+4=18$

Transposed $4$ to the other side of the equation. Of course when transposing, we must change the sign. We have

$x=18-4$

$x=14$

Verify the solution

$x+4=18$

$14+4=18$

$18=18$ $\text{The statement is true}.$

$\large The~solution~is~verified.$

$x+4=18$

Subtract 4 from each side to isolate $x$ .

$x=14$

Verify using substitution:

$x+4=18$

$14+4=18$

$18=18$

$\begin{aligned} x + 4 &= 18 \\ x &= 18 - 4 \\ &= 14 \end{aligned}$ Verifying the solution: $\def\checkmark{\tikz\fill[scale=0.4](0,.35) -- (.25,0) -- (1,.7) -- (.25,.15) -- cycle;}$ $14 + 4 = 18 \quad \checkmark$ Therefore, the answer is 14 .

As simple as:

x + 4 = 18

x = 18 - 4

x = 14

Verifying:

x + 4 = 18

14 + 4 = 18

18 = 18