9a-7=5(a+9)

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Solution for 9a-7=5(a+9) equation:


Simplifying
9a + -7 = 5(a + 9)

Reorder the terms:
-7 + 9a = 5(a + 9)

Reorder the terms:
-7 + 9a = 5(9 + a)
-7 + 9a = (9 * 5 + a * 5)
-7 + 9a = (45 + 5a)

Solving
-7 + 9a = 45 + 5a

Solving for variable 'a'.

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

Add '-5a' to each side of the equation.
-7 + 9a + -5a = 45 + 5a + -5a

Combine like terms: 9a + -5a = 4a
-7 + 4a = 45 + 5a + -5a

Combine like terms: 5a + -5a = 0
-7 + 4a = 45 + 0
-7 + 4a = 45

Add '7' to each side of the equation.
-7 + 7 + 4a = 45 + 7

Combine like terms: -7 + 7 = 0
0 + 4a = 45 + 7
4a = 45 + 7

Combine like terms: 45 + 7 = 52
4a = 52

Divide each side by '4'.
a = 13

Simplifying
a = 13

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