7a+a+a+15=

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Solution for 7a+a+a+15= equation:


Simplifying
7a + a + a + 15 = 0

Reorder the terms:
15 + 7a + a + a = 0

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

Combine like terms: 8a + a = 9a
15 + 9a = 0

Solving
15 + 9a = 0

Solving for variable 'a'.

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

Add '-15' to each side of the equation.
15 + -15 + 9a = 0 + -15

Combine like terms: 15 + -15 = 0
0 + 9a = 0 + -15
9a = 0 + -15

Combine like terms: 0 + -15 = -15
9a = -15

Divide each side by '9'.
a = -1.666666667

Simplifying
a = -1.666666667

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