20-2a=56-5a

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Solution for 20-2a=56-5a equation:


Simplifying
20 + -2a = 56 + -5a

Solving
20 + -2a = 56 + -5a

Solving for variable 'a'.

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

Add '5a' to each side of the equation.
20 + -2a + 5a = 56 + -5a + 5a

Combine like terms: -2a + 5a = 3a
20 + 3a = 56 + -5a + 5a

Combine like terms: -5a + 5a = 0
20 + 3a = 56 + 0
20 + 3a = 56

Add '-20' to each side of the equation.
20 + -20 + 3a = 56 + -20

Combine like terms: 20 + -20 = 0
0 + 3a = 56 + -20
3a = 56 + -20

Combine like terms: 56 + -20 = 36
3a = 36

Divide each side by '3'.
a = 12

Simplifying
a = 12

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