7a-4=(3a+9)+4a

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Solution for 7a-4=(3a+9)+4a equation:


Simplifying
7a + -4 = (3a + 9) + 4a

Reorder the terms:
-4 + 7a = (3a + 9) + 4a

Reorder the terms:
-4 + 7a = (9 + 3a) + 4a

Remove parenthesis around (9 + 3a)
-4 + 7a = 9 + 3a + 4a

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

Add '-7a' to each side of the equation.
-4 + 7a + -7a = 9 + 7a + -7a

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

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

Solving
-4 = 9

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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