7a-15=15-5a

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Solution for 7a-15=15-5a equation:


Simplifying
7a + -15 = 15 + -5a

Reorder the terms:
-15 + 7a = 15 + -5a

Solving
-15 + 7a = 15 + -5a

Solving for variable 'a'.

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

Add '5a' to each side of the equation.
-15 + 7a + 5a = 15 + -5a + 5a

Combine like terms: 7a + 5a = 12a
-15 + 12a = 15 + -5a + 5a

Combine like terms: -5a + 5a = 0
-15 + 12a = 15 + 0
-15 + 12a = 15

Add '15' to each side of the equation.
-15 + 15 + 12a = 15 + 15

Combine like terms: -15 + 15 = 0
0 + 12a = 15 + 15
12a = 15 + 15

Combine like terms: 15 + 15 = 30
12a = 30

Divide each side by '12'.
a = 2.5

Simplifying
a = 2.5

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