7a+5a-40=9+4a+7

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Solution for 7a+5a-40=9+4a+7 equation:


Simplifying
7a + 5a + -40 = 9 + 4a + 7

Reorder the terms:
-40 + 7a + 5a = 9 + 4a + 7

Combine like terms: 7a + 5a = 12a
-40 + 12a = 9 + 4a + 7

Reorder the terms:
-40 + 12a = 9 + 7 + 4a

Combine like terms: 9 + 7 = 16
-40 + 12a = 16 + 4a

Solving
-40 + 12a = 16 + 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.
-40 + 12a + -4a = 16 + 4a + -4a

Combine like terms: 12a + -4a = 8a
-40 + 8a = 16 + 4a + -4a

Combine like terms: 4a + -4a = 0
-40 + 8a = 16 + 0
-40 + 8a = 16

Add '40' to each side of the equation.
-40 + 40 + 8a = 16 + 40

Combine like terms: -40 + 40 = 0
0 + 8a = 16 + 40
8a = 16 + 40

Combine like terms: 16 + 40 = 56
8a = 56

Divide each side by '8'.
a = 7

Simplifying
a = 7

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