7-a=15-2a

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Solution for 7-a=15-2a equation:


Simplifying
7 + -1a = 15 + -2a

Solving
7 + -1a = 15 + -2a

Solving for variable 'a'.

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

Add '2a' to each side of the equation.
7 + -1a + 2a = 15 + -2a + 2a

Combine like terms: -1a + 2a = 1a
7 + 1a = 15 + -2a + 2a

Combine like terms: -2a + 2a = 0
7 + 1a = 15 + 0
7 + 1a = 15

Add '-7' to each side of the equation.
7 + -7 + 1a = 15 + -7

Combine like terms: 7 + -7 = 0
0 + 1a = 15 + -7
1a = 15 + -7

Combine like terms: 15 + -7 = 8
1a = 8

Divide each side by '1'.
a = 8

Simplifying
a = 8

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