7a-8=2a-18

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Solution for 7a-8=2a-18 equation:


Simplifying
7a + -8 = 2a + -18

Reorder the terms:
-8 + 7a = 2a + -18

Reorder the terms:
-8 + 7a = -18 + 2a

Solving
-8 + 7a = -18 + 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.
-8 + 7a + -2a = -18 + 2a + -2a

Combine like terms: 7a + -2a = 5a
-8 + 5a = -18 + 2a + -2a

Combine like terms: 2a + -2a = 0
-8 + 5a = -18 + 0
-8 + 5a = -18

Add '8' to each side of the equation.
-8 + 8 + 5a = -18 + 8

Combine like terms: -8 + 8 = 0
0 + 5a = -18 + 8
5a = -18 + 8

Combine like terms: -18 + 8 = -10
5a = -10

Divide each side by '5'.
a = -2

Simplifying
a = -2

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