3a-a+7=7

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Solution for 3a-a+7=7 equation: 


Simplifying
3a + -1a + 7 = 7

Reorder the terms:
7 + 3a + -1a = 7

Combine like terms: 3a + -1a = 2a
7 + 2a = 7

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

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

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

Solving
2a = 0

Solving for variable 'a'.

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

Divide each side by '2'.
a = 0

Simplifying
a = 0

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