9a+4b-7a=

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


Simplifying
9a + 4b + -7a = 0

Reorder the terms:
9a + -7a + 4b = 0

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