12=0.5a+15

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Solution for 12=0.5a+15 equation:


Simplifying
12 = 0.5a + 15

Reorder the terms:
12 = 15 + 0.5a

Solving
12 = 15 + 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.
12 + -0.5a = 15 + 0.5a + -0.5a

Combine like terms: 0.5a + -0.5a = 0.0
12 + -0.5a = 15 + 0.0
12 + -0.5a = 15

Add '-12' to each side of the equation.
12 + -12 + -0.5a = 15 + -12

Combine like terms: 12 + -12 = 0
0 + -0.5a = 15 + -12
-0.5a = 15 + -12

Combine like terms: 15 + -12 = 3
-0.5a = 3

Divide each side by '-0.5'.
a = -6

Simplifying
a = -6

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