15=-4a+7

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Solution for 15=-4a+7 equation:


Simplifying
15 = -4a + 7

Reorder the terms:
15 = 7 + -4a

Solving
15 = 7 + -4a

Solving for variable 'a'.

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

Add '4a' to each side of the equation.
15 + 4a = 7 + -4a + 4a

Combine like terms: -4a + 4a = 0
15 + 4a = 7 + 0
15 + 4a = 7

Add '-15' to each side of the equation.
15 + -15 + 4a = 7 + -15

Combine like terms: 15 + -15 = 0
0 + 4a = 7 + -15
4a = 7 + -15

Combine like terms: 7 + -15 = -8
4a = -8

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

Simplifying
a = -2

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