28+28=12+9+x

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Solution for 28+28=12+9+x equation:


Simplifying
28 + 28 = 12 + 9 + x

Combine like terms: 28 + 28 = 56
56 = 12 + 9 + x

Combine like terms: 12 + 9 = 21
56 = 21 + x

Solving
56 = 21 + 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.
56 + -1x = 21 + x + -1x

Combine like terms: x + -1x = 0
56 + -1x = 21 + 0
56 + -1x = 21

Add '-56' to each side of the equation.
56 + -56 + -1x = 21 + -56

Combine like terms: 56 + -56 = 0
0 + -1x = 21 + -56
-1x = 21 + -56

Combine like terms: 21 + -56 = -35
-1x = -35

Divide each side by '-1'.
x = 35

Simplifying
x = 35

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