7=3a+5a-a+7

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Solution for 7=3a+5a-a+7 equation:


Simplifying
7 = 3a + 5a + -1a + 7

Reorder the terms:
7 = 7 + 3a + 5a + -1a

Combine like terms: 3a + 5a = 8a
7 = 7 + 8a + -1a

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

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

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

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

Solving
0 = 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
0 + -7a = 7a + -7a
Remove the zero:
-7a = 7a + -7a

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

Divide each side by '-7'.
a = 0

Simplifying
a = 0

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