9=-7a+2a

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


Simplifying
9 = -7a + 2a

Combine like terms: -7a + 2a = -5a
9 = -5a

Solving
9 = -5a

Solving for variable 'a'.

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

Add '5a' to each side of the equation.
9 + 5a = -5a + 5a

Combine like terms: -5a + 5a = 0
9 + 5a = 0

Add '-9' to each side of the equation.
9 + -9 + 5a = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 5a = 0 + -9
5a = 0 + -9

Combine like terms: 0 + -9 = -9
5a = -9

Divide each side by '5'.
a = -1.8

Simplifying
a = -1.8

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