4a+3a=-21

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Solution for 4a+3a=-21 equation: 


Simplifying
4a + 3a = -21

Combine like terms: 4a + 3a = 7a
7a = -21

Solving
7a = -21

Solving for variable 'a'.

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

Divide each side by '7'.
a = -3

Simplifying
a = -3

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