7a-15=13

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Solution for 7a-15=13 equation:


Simplifying
7a + -15 = 13

Reorder the terms:
-15 + 7a = 13

Solving
-15 + 7a = 13

Solving for variable 'a'.

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

Add '15' to each side of the equation.
-15 + 15 + 7a = 13 + 15

Combine like terms: -15 + 15 = 0
0 + 7a = 13 + 15
7a = 13 + 15

Combine like terms: 13 + 15 = 28
7a = 28

Divide each side by '7'.
a = 4

Simplifying
a = 4

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