9a-15=7a+11

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Solution for 9a-15=7a+11 equation:


Simplifying
9a + -15 = 7a + 11

Reorder the terms:
-15 + 9a = 7a + 11

Reorder the terms:
-15 + 9a = 11 + 7a

Solving
-15 + 9a = 11 + 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
-15 + 9a + -7a = 11 + 7a + -7a

Combine like terms: 9a + -7a = 2a
-15 + 2a = 11 + 7a + -7a

Combine like terms: 7a + -7a = 0
-15 + 2a = 11 + 0
-15 + 2a = 11

Add '15' to each side of the equation.
-15 + 15 + 2a = 11 + 15

Combine like terms: -15 + 15 = 0
0 + 2a = 11 + 15
2a = 11 + 15

Combine like terms: 11 + 15 = 26
2a = 26

Divide each side by '2'.
a = 13

Simplifying
a = 13

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