Question

4 (a+3)=36 show all steps

Answer 1

$4(a+3)=36$
Delete the parentheses, multiplying with the number of outside, making the set of signals
$4a + 12 = 36$

Number with incognito are to the left of the equality and numbers without incognito are to the right, remembering that when changing of side changes the signal.

$4a = 36 - 12$
$4a = 24$
$a = \frac{24}{4}$
$\boxed{a = 6}$

Confirm that the solution is correct:
$4(a+3)=36$
$4(6+3)=36$
$4(9)=36$
$36=36$ (TRUE)

Answer:
$\boxed{a = 6}$