6a-18=2a-20

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Solution for 6a-18=2a-20 equation:


Simplifying
6a + -18 = 2a + -20

Reorder the terms:
-18 + 6a = 2a + -20

Reorder the terms:
-18 + 6a = -20 + 2a

Solving
-18 + 6a = -20 + 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.
-18 + 6a + -2a = -20 + 2a + -2a

Combine like terms: 6a + -2a = 4a
-18 + 4a = -20 + 2a + -2a

Combine like terms: 2a + -2a = 0
-18 + 4a = -20 + 0
-18 + 4a = -20

Add '18' to each side of the equation.
-18 + 18 + 4a = -20 + 18

Combine like terms: -18 + 18 = 0
0 + 4a = -20 + 18
4a = -20 + 18

Combine like terms: -20 + 18 = -2
4a = -2

Divide each side by '4'.
a = -0.5

Simplifying
a = -0.5

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