-2a+9-7+8a=-18

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Solution for -2a+9-7+8a=-18 equation:


Simplifying
-2a + 9 + -7 + 8a = -18

Reorder the terms:
9 + -7 + -2a + 8a = -18

Combine like terms: 9 + -7 = 2
2 + -2a + 8a = -18

Combine like terms: -2a + 8a = 6a
2 + 6a = -18

Solving
2 + 6a = -18

Solving for variable 'a'.

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

Add '-2' to each side of the equation.
2 + -2 + 6a = -18 + -2

Combine like terms: 2 + -2 = 0
0 + 6a = -18 + -2
6a = -18 + -2

Combine like terms: -18 + -2 = -20
6a = -20

Divide each side by '6'.
a = -3.333333333

Simplifying
a = -3.333333333

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