7a+7=9(5a-8)

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Solution for 7a+7=9(5a-8) equation:


Simplifying
7a + 7 = 9(5a + -8)

Reorder the terms:
7 + 7a = 9(5a + -8)

Reorder the terms:
7 + 7a = 9(-8 + 5a)
7 + 7a = (-8 * 9 + 5a * 9)
7 + 7a = (-72 + 45a)

Solving
7 + 7a = -72 + 45a

Solving for variable 'a'.

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

Add '-45a' to each side of the equation.
7 + 7a + -45a = -72 + 45a + -45a

Combine like terms: 7a + -45a = -38a
7 + -38a = -72 + 45a + -45a

Combine like terms: 45a + -45a = 0
7 + -38a = -72 + 0
7 + -38a = -72

Add '-7' to each side of the equation.
7 + -7 + -38a = -72 + -7

Combine like terms: 7 + -7 = 0
0 + -38a = -72 + -7
-38a = -72 + -7

Combine like terms: -72 + -7 = -79
-38a = -79

Divide each side by '-38'.
a = 2.078947368

Simplifying
a = 2.078947368

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