4(a+5)=12

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Solution for 4(a+5)=12 equation: 


Simplifying
4(a + 5) = 12

Reorder the terms:
4(5 + a) = 12
(5 * 4 + a * 4) = 12
(20 + 4a) = 12

Solving
20 + 4a = 12

Solving for variable 'a'.

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

Add '-20' to each side of the equation.
20 + -20 + 4a = 12 + -20

Combine like terms: 20 + -20 = 0
0 + 4a = 12 + -20
4a = 12 + -20

Combine like terms: 12 + -20 = -8
4a = -8

Divide each side by '4'.
a = -2

Simplifying
a = -2

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