3a-20=12-2a+3

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Solution for 3a-20=12-2a+3 equation:


Simplifying
3a + -20 = 12 + -2a + 3

Reorder the terms:
-20 + 3a = 12 + -2a + 3

Reorder the terms:
-20 + 3a = 12 + 3 + -2a

Combine like terms: 12 + 3 = 15
-20 + 3a = 15 + -2a

Solving
-20 + 3a = 15 + -2a

Solving for variable 'a'.

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

Add '2a' to each side of the equation.
-20 + 3a + 2a = 15 + -2a + 2a

Combine like terms: 3a + 2a = 5a
-20 + 5a = 15 + -2a + 2a

Combine like terms: -2a + 2a = 0
-20 + 5a = 15 + 0
-20 + 5a = 15

Add '20' to each side of the equation.
-20 + 20 + 5a = 15 + 20

Combine like terms: -20 + 20 = 0
0 + 5a = 15 + 20
5a = 15 + 20

Combine like terms: 15 + 20 = 35
5a = 35

Divide each side by '5'.
a = 7

Simplifying
a = 7

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