10+11=40+x

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Solution for 10+11=40+x equation:


Simplifying
10 + 11 = 40 + x

Combine like terms: 10 + 11 = 21
21 = 40 + x

Solving
21 = 40 + 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.
21 + -1x = 40 + x + -1x

Combine like terms: x + -1x = 0
21 + -1x = 40 + 0
21 + -1x = 40

Add '-21' to each side of the equation.
21 + -21 + -1x = 40 + -21

Combine like terms: 21 + -21 = 0
0 + -1x = 40 + -21
-1x = 40 + -21

Combine like terms: 40 + -21 = 19
-1x = 19

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

Simplifying
x = -19

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