3+12=69+x

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Solution for 3+12=69+x equation:


Simplifying
3 + 12 = 69 + x

Combine like terms: 3 + 12 = 15
15 = 69 + x

Solving
15 = 69 + 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.
15 + -1x = 69 + x + -1x

Combine like terms: x + -1x = 0
15 + -1x = 69 + 0
15 + -1x = 69

Add '-15' to each side of the equation.
15 + -15 + -1x = 69 + -15

Combine like terms: 15 + -15 = 0
0 + -1x = 69 + -15
-1x = 69 + -15

Combine like terms: 69 + -15 = 54
-1x = 54

Divide each side by '-1'.
x = -54

Simplifying
x = -54

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