10+15-12a=7

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Solution for 10+15-12a=7 equation: 


Simplifying
10 + 15 + -12a = 7

Combine like terms: 10 + 15 = 25
25 + -12a = 7

Solving
25 + -12a = 7

Solving for variable 'a'.

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

Add '-25' to each side of the equation.
25 + -25 + -12a = 7 + -25

Combine like terms: 25 + -25 = 0
0 + -12a = 7 + -25
-12a = 7 + -25

Combine like terms: 7 + -25 = -18
-12a = -18

Divide each side by '-12'.
a = 1.5

Simplifying
a = 1.5

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