15=4(a+2)+3a

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Solution for 15=4(a+2)+3a equation: 


Simplifying
15 = 4(a + 2) + 3a

Reorder the terms:
15 = 4(2 + a) + 3a
15 = (2 * 4 + a * 4) + 3a
15 = (8 + 4a) + 3a

Combine like terms: 4a + 3a = 7a
15 = 8 + 7a

Solving
15 = 8 + 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
15 + -7a = 8 + 7a + -7a

Combine like terms: 7a + -7a = 0
15 + -7a = 8 + 0
15 + -7a = 8

Add '-15' to each side of the equation.
15 + -15 + -7a = 8 + -15

Combine like terms: 15 + -15 = 0
0 + -7a = 8 + -15
-7a = 8 + -15

Combine like terms: 8 + -15 = -7
-7a = -7

Divide each side by '-7'.
a = 1

Simplifying
a = 1

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