7a+7=3a-13

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Solution for 7a+7=3a-13 equation:


Simplifying
7a + 7 = 3a + -13

Reorder the terms:
7 + 7a = 3a + -13

Reorder the terms:
7 + 7a = -13 + 3a

Solving
7 + 7a = -13 + 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
7 + 7a + -3a = -13 + 3a + -3a

Combine like terms: 7a + -3a = 4a
7 + 4a = -13 + 3a + -3a

Combine like terms: 3a + -3a = 0
7 + 4a = -13 + 0
7 + 4a = -13

Add '-7' to each side of the equation.
7 + -7 + 4a = -13 + -7

Combine like terms: 7 + -7 = 0
0 + 4a = -13 + -7
4a = -13 + -7

Combine like terms: -13 + -7 = -20
4a = -20

Divide each side by '4'.
a = -5

Simplifying
a = -5

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