5a+7+8a=-20

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Solution for 5a+7+8a=-20 equation:


Simplifying
5a + 7 + 8a = -20

Reorder the terms:
7 + 5a + 8a = -20

Combine like terms: 5a + 8a = 13a
7 + 13a = -20

Solving
7 + 13a = -20

Solving for variable 'a'.

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

Add '-7' to each side of the equation.
7 + -7 + 13a = -20 + -7

Combine like terms: 7 + -7 = 0
0 + 13a = -20 + -7
13a = -20 + -7

Combine like terms: -20 + -7 = -27
13a = -27

Divide each side by '13'.
a = -2.076923077

Simplifying
a = -2.076923077

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