10a-5+7a-91=4a+20

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Solution for 10a-5+7a-91=4a+20 equation:


Simplifying
10a + -5 + 7a + -91 = 4a + 20

Reorder the terms:
-5 + -91 + 10a + 7a = 4a + 20

Combine like terms: -5 + -91 = -96
-96 + 10a + 7a = 4a + 20

Combine like terms: 10a + 7a = 17a
-96 + 17a = 4a + 20

Reorder the terms:
-96 + 17a = 20 + 4a

Solving
-96 + 17a = 20 + 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.
-96 + 17a + -4a = 20 + 4a + -4a

Combine like terms: 17a + -4a = 13a
-96 + 13a = 20 + 4a + -4a

Combine like terms: 4a + -4a = 0
-96 + 13a = 20 + 0
-96 + 13a = 20

Add '96' to each side of the equation.
-96 + 96 + 13a = 20 + 96

Combine like terms: -96 + 96 = 0
0 + 13a = 20 + 96
13a = 20 + 96

Combine like terms: 20 + 96 = 116
13a = 116

Divide each side by '13'.
a = 8.923076923

Simplifying
a = 8.923076923

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