4(2a+5)=12

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Solution for 4(2a+5)=12 equation: 


Simplifying
4(2a + 5) = 12

Reorder the terms:
4(5 + 2a) = 12
(5 * 4 + 2a * 4) = 12
(20 + 8a) = 12

Solving
20 + 8a = 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 + 8a = 12 + -20

Combine like terms: 20 + -20 = 0
0 + 8a = 12 + -20
8a = 12 + -20

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

Divide each side by '8'.
a = -1

Simplifying
a = -1

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