12+4=x-3

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Solution for 12+4=x-3 equation:


Simplifying
12 + 4 = x + -3

Combine like terms: 12 + 4 = 16
16 = x + -3

Reorder the terms:
16 = -3 + x

Solving
16 = -3 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
16 + -1x = -3 + x + -1x

Combine like terms: x + -1x = 0
16 + -1x = -3 + 0
16 + -1x = -3

Add '-16' to each side of the equation.
16 + -16 + -1x = -3 + -16

Combine like terms: 16 + -16 = 0
0 + -1x = -3 + -16
-1x = -3 + -16

Combine like terms: -3 + -16 = -19
-1x = -19

Divide each side by '-1'.
x = 19

Simplifying
x = 19

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