3a-7a=8

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Solution for 3a-7a=8 equation: 


Simplifying
3a + -7a = 8

Combine like terms: 3a + -7a = -4a
-4a = 8

Solving
-4a = 8

Solving for variable 'a'.

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

Divide each side by '-4'.
a = -2

Simplifying
a = -2

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