=7a-3a

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Solution for =7a-3a equation: 


Simplifying
0 = 7a + -3a

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

Solving
0 = 4a

Solving for variable 'a'.

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

Add '-4a' to each side of the equation.
0 + -4a = 4a + -4a
Remove the zero:
-4a = 4a + -4a

Combine like terms: 4a + -4a = 0
-4a = 0

Divide each side by '-4'.
a = 0

Simplifying
a = 0

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