5a+7-4a=20

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Solution for 5a+7-4a=20 equation:


Simplifying
5a + 7 + -4a = 20

Reorder the terms:
7 + 5a + -4a = 20

Combine like terms: 5a + -4a = 1a
7 + 1a = 20

Solving
7 + 1a = 20

Solving for variable 'a'.

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

Add '-7' to each side of the equation.
7 + -7 + 1a = 20 + -7

Combine like terms: 7 + -7 = 0
0 + 1a = 20 + -7
1a = 20 + -7

Combine like terms: 20 + -7 = 13
1a = 13

Divide each side by '1'.
a = 13

Simplifying
a = 13

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