12+2.5a=5

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Solution for 12+2.5a=5 equation: 


Simplifying
12 + 2.5a = 5

Solving
12 + 2.5a = 5

Solving for variable 'a'.

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

Add '-12' to each side of the equation.
12 + -12 + 2.5a = 5 + -12

Combine like terms: 12 + -12 = 0
0 + 2.5a = 5 + -12
2.5a = 5 + -12

Combine like terms: 5 + -12 = -7
2.5a = -7

Divide each side by '2.5'.
a = -2.8

Simplifying
a = -2.8

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