-3+9+a=-4+7

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Solution for -3+9+a=-4+7 equation: 


Simplifying
-3 + 9 + a = -4 + 7

Combine like terms: -3 + 9 = 6
6 + a = -4 + 7

Combine like terms: -4 + 7 = 3
6 + a = 3

Solving
6 + a = 3

Solving for variable 'a'.

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

Add '-6' to each side of the equation.
6 + -6 + a = 3 + -6

Combine like terms: 6 + -6 = 0
0 + a = 3 + -6
a = 3 + -6

Combine like terms: 3 + -6 = -3
a = -3

Simplifying
a = -3

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