7a+7=-a+31

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Solution for 7a+7=-a+31 equation:


Simplifying
7a + 7 = -1a + 31

Reorder the terms:
7 + 7a = -1a + 31

Reorder the terms:
7 + 7a = 31 + -1a

Solving
7 + 7a = 31 + -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
7 + 7a + a = 31 + -1a + a

Combine like terms: 7a + a = 8a
7 + 8a = 31 + -1a + a

Combine like terms: -1a + a = 0
7 + 8a = 31 + 0
7 + 8a = 31

Add '-7' to each side of the equation.
7 + -7 + 8a = 31 + -7

Combine like terms: 7 + -7 = 0
0 + 8a = 31 + -7
8a = 31 + -7

Combine like terms: 31 + -7 = 24
8a = 24

Divide each side by '8'.
a = 3

Simplifying
a = 3

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