20+7-x=10

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Solution for 20+7-x=10 equation: 


Simplifying
20 + 7 + -1x = 10

Combine like terms: 20 + 7 = 27
27 + -1x = 10

Solving
27 + -1x = 10

Solving for variable 'x'.

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

Add '-27' to each side of the equation.
27 + -27 + -1x = 10 + -27

Combine like terms: 27 + -27 = 0
0 + -1x = 10 + -27
-1x = 10 + -27

Combine like terms: 10 + -27 = -17
-1x = -17

Divide each side by '-1'.
x = 17

Simplifying
x = 17

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