18-2a=12-.5a

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Solution for 18-2a=12-.5a equation:


Simplifying
18 + -2a = 12 + -0.5a

Solving
18 + -2a = 12 + -0.5a

Solving for variable 'a'.

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

Add '0.5a' to each side of the equation.
18 + -2a + 0.5a = 12 + -0.5a + 0.5a

Combine like terms: -2a + 0.5a = -1.5a
18 + -1.5a = 12 + -0.5a + 0.5a

Combine like terms: -0.5a + 0.5a = 0.0
18 + -1.5a = 12 + 0.0
18 + -1.5a = 12

Add '-18' to each side of the equation.
18 + -18 + -1.5a = 12 + -18

Combine like terms: 18 + -18 = 0
0 + -1.5a = 12 + -18
-1.5a = 12 + -18

Combine like terms: 12 + -18 = -6
-1.5a = -6

Divide each side by '-1.5'.
a = 4

Simplifying
a = 4

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