a+5+7=10

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Solution for a+5+7=10 equation: 


Simplifying
a + 5 + 7 = 10

Reorder the terms:
5 + 7 + a = 10

Combine like terms: 5 + 7 = 12
12 + a = 10

Solving
12 + a = 10

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 + a = 10 + -12

Combine like terms: 12 + -12 = 0
0 + a = 10 + -12
a = 10 + -12

Combine like terms: 10 + -12 = -2
a = -2

Simplifying
a = -2

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