5a-20-8a=55

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Solution for 5a-20-8a=55 equation:


Simplifying
5a + -20 + -8a = 55

Reorder the terms:
-20 + 5a + -8a = 55

Combine like terms: 5a + -8a = -3a
-20 + -3a = 55

Solving
-20 + -3a = 55

Solving for variable 'a'.

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

Add '20' to each side of the equation.
-20 + 20 + -3a = 55 + 20

Combine like terms: -20 + 20 = 0
0 + -3a = 55 + 20
-3a = 55 + 20

Combine like terms: 55 + 20 = 75
-3a = 75

Divide each side by '-3'.
a = -25

Simplifying
a = -25

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