6a+7-a=18

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Solution for 6a+7-a=18 equation:


Simplifying
6a + 7 + -1a = 18

Reorder the terms:
7 + 6a + -1a = 18

Combine like terms: 6a + -1a = 5a
7 + 5a = 18

Solving
7 + 5a = 18

Solving for variable 'a'.

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

Add '-7' to each side of the equation.
7 + -7 + 5a = 18 + -7

Combine like terms: 7 + -7 = 0
0 + 5a = 18 + -7
5a = 18 + -7

Combine like terms: 18 + -7 = 11
5a = 11

Divide each side by '5'.
a = 2.2

Simplifying
a = 2.2

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