15=5(a+4)

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Solution for 15=5(a+4) equation:


Simplifying
15 = 5(a + 4)

Reorder the terms:
15 = 5(4 + a)
15 = (4 * 5 + a * 5)
15 = (20 + 5a)

Solving
15 = 20 + 5a

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-5a' to each side of the equation.
15 + -5a = 20 + 5a + -5a

Combine like terms: 5a + -5a = 0
15 + -5a = 20 + 0
15 + -5a = 20

Add '-15' to each side of the equation.
15 + -15 + -5a = 20 + -15

Combine like terms: 15 + -15 = 0
0 + -5a = 20 + -15
-5a = 20 + -15

Combine like terms: 20 + -15 = 5
-5a = 5

Divide each side by '-5'.
a = -1

Simplifying
a = -1

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