2a+7b-9a-4b=

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Solution for 2a+7b-9a-4b= equation:


Simplifying
2a + 7b + -9a + -4b = 0

Reorder the terms:
2a + -9a + 7b + -4b = 0

Combine like terms: 2a + -9a = -7a
-7a + 7b + -4b = 0

Combine like terms: 7b + -4b = 3b
-7a + 3b = 0

Solving
-7a + 3b = 0

Solving for variable 'a'.

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

Add '-3b' to each side of the equation.
-7a + 3b + -3b = 0 + -3b

Combine like terms: 3b + -3b = 0
-7a + 0 = 0 + -3b
-7a = 0 + -3b
Remove the zero:
-7a = -3b

Divide each side by '-7'.
a = 0.4285714286b

Simplifying
a = 0.4285714286b

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