9b-7b+2b+2a=

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


Simplifying
9b + -7b + 2b + 2a = 0

Reorder the terms:
2a + 9b + -7b + 2b = 0

Combine like terms: 9b + -7b = 2b
2a + 2b + 2b = 0

Combine like terms: 2b + 2b = 4b
2a + 4b = 0

Solving
2a + 4b = 0

Solving for variable 'a'.

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

Add '-4b' to each side of the equation.
2a + 4b + -4b = 0 + -4b

Combine like terms: 4b + -4b = 0
2a + 0 = 0 + -4b
2a = 0 + -4b
Remove the zero:
2a = -4b

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

Simplifying
a = -2b

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