12-a+18-18a+20a=

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Solution for 12-a+18-18a+20a= equation:


Simplifying
12 + -1a + 18 + -18a + 20a = 0

Reorder the terms:
12 + 18 + -1a + -18a + 20a = 0

Combine like terms: 12 + 18 = 30
30 + -1a + -18a + 20a = 0

Combine like terms: -1a + -18a = -19a
30 + -19a + 20a = 0

Combine like terms: -19a + 20a = 1a
30 + 1a = 0

Solving
30 + 1a = 0

Solving for variable 'a'.

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

Add '-30' to each side of the equation.
30 + -30 + 1a = 0 + -30

Combine like terms: 30 + -30 = 0
0 + 1a = 0 + -30
1a = 0 + -30

Combine like terms: 0 + -30 = -30
1a = -30

Divide each side by '1'.
a = -30

Simplifying
a = -30

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