7a+5-4a=-13

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Solution for 7a+5-4a=-13 equation:


Simplifying
7a + 5 + -4a = -13

Reorder the terms:
5 + 7a + -4a = -13

Combine like terms: 7a + -4a = 3a
5 + 3a = -13

Solving
5 + 3a = -13

Solving for variable 'a'.

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

Add '-5' to each side of the equation.
5 + -5 + 3a = -13 + -5

Combine like terms: 5 + -5 = 0
0 + 3a = -13 + -5
3a = -13 + -5

Combine like terms: -13 + -5 = -18
3a = -18

Divide each side by '3'.
a = -6

Simplifying
a = -6

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