7a+12-15a+40=

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Solution for 7a+12-15a+40= equation:


Simplifying
7a + 12 + -15a + 40 = 0

Reorder the terms:
12 + 40 + 7a + -15a = 0

Combine like terms: 12 + 40 = 52
52 + 7a + -15a = 0

Combine like terms: 7a + -15a = -8a
52 + -8a = 0

Solving
52 + -8a = 0

Solving for variable 'a'.

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

Add '-52' to each side of the equation.
52 + -52 + -8a = 0 + -52

Combine like terms: 52 + -52 = 0
0 + -8a = 0 + -52
-8a = 0 + -52

Combine like terms: 0 + -52 = -52
-8a = -52

Divide each side by '-8'.
a = 6.5

Simplifying
a = 6.5

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