4-9a+8a=7

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Solution for 4-9a+8a=7 equation: 


Simplifying
4 + -9a + 8a = 7

Combine like terms: -9a + 8a = -1a
4 + -1a = 7

Solving
4 + -1a = 7

Solving for variable 'a'.

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

Add '-4' to each side of the equation.
4 + -4 + -1a = 7 + -4

Combine like terms: 4 + -4 = 0
0 + -1a = 7 + -4
-1a = 7 + -4

Combine like terms: 7 + -4 = 3
-1a = 3

Divide each side by '-1'.
a = -3

Simplifying
a = -3

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