Question

solve the equations
15+x=5x+3

Answer 1

15+x=5x+3
15-3=5x-x
12=4x
X=12/4
X=3

Answer 2

Heya !!!

Solution : -
$15 + x = 5x + 3 \\ \\ 15 - 3 = 5x - x \\ \\ 12 = 4x \\ \\ \frac{12}{4} = x \\ \\ 3 = x$

Check
L. H. S = 15 + x
= 15 + 3
= 18

R. H. S = 5x + 3
= 5 X 3 + 3
= 15 + 3
= 18

Hence, LHS = RHS (checked)




Hope it helps.