-7a-7b+3a-9b=

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Solution for -7a-7b+3a-9b= equation:


Simplifying
-7a + -7b + 3a + -9b = 0

Reorder the terms:
-7a + 3a + -7b + -9b = 0

Combine like terms: -7a + 3a = -4a
-4a + -7b + -9b = 0

Combine like terms: -7b + -9b = -16b
-4a + -16b = 0

Solving
-4a + -16b = 0

Solving for variable 'a'.

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

Add '16b' to each side of the equation.
-4a + -16b + 16b = 0 + 16b

Combine like terms: -16b + 16b = 0
-4a + 0 = 0 + 16b
-4a = 0 + 16b
Remove the zero:
-4a = 16b

Divide each side by '-4'.
a = -4b

Simplifying
a = -4b

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