8+7+5a-12=

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Solution for 8+7+5a-12= equation:


Simplifying
8 + 7 + 5a + -12 = 0

Reorder the terms:
8 + 7 + -12 + 5a = 0

Combine like terms: 8 + 7 = 15
15 + -12 + 5a = 0

Combine like terms: 15 + -12 = 3
3 + 5a = 0

Solving
3 + 5a = 0

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + 5a = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 5a = 0 + -3
5a = 0 + -3

Combine like terms: 0 + -3 = -3
5a = -3

Divide each side by '5'.
a = -0.6

Simplifying
a = -0.6

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