-4+2a+5=15

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Solution for -4+2a+5=15 equation: 


Simplifying
-4 + 2a + 5 = 15

Reorder the terms:
-4 + 5 + 2a = 15

Combine like terms: -4 + 5 = 1
1 + 2a = 15

Solving
1 + 2a = 15

Solving for variable 'a'.

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

Add '-1' to each side of the equation.
1 + -1 + 2a = 15 + -1

Combine like terms: 1 + -1 = 0
0 + 2a = 15 + -1
2a = 15 + -1

Combine like terms: 15 + -1 = 14
2a = 14

Divide each side by '2'.
a = 7

Simplifying
a = 7

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