4a-8=9a+7

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Solution for 4a-8=9a+7 equation:


Simplifying
4a + -8 = 9a + 7

Reorder the terms:
-8 + 4a = 9a + 7

Reorder the terms:
-8 + 4a = 7 + 9a

Solving
-8 + 4a = 7 + 9a

Solving for variable 'a'.

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

Add '-9a' to each side of the equation.
-8 + 4a + -9a = 7 + 9a + -9a

Combine like terms: 4a + -9a = -5a
-8 + -5a = 7 + 9a + -9a

Combine like terms: 9a + -9a = 0
-8 + -5a = 7 + 0
-8 + -5a = 7

Add '8' to each side of the equation.
-8 + 8 + -5a = 7 + 8

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

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

Divide each side by '-5'.
a = -3

Simplifying
a = -3

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