7a-15=20

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Solution for 7a-15=20 equation: 


Simplifying
7a + -15 = 20

Reorder the terms:
-15 + 7a = 20

Solving
-15 + 7a = 20

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 = 20 + 15

Combine like terms: -15 + 15 = 0
0 + 7a = 20 + 15
7a = 20 + 15

Combine like terms: 20 + 15 = 35
7a = 35

Divide each side by '7'.
a = 5

Simplifying
a = 5

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