30+10=100+x

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Solution for 30+10=100+x equation:


Simplifying
30 + 10 = 100 + x

Combine like terms: 30 + 10 = 40
40 = 100 + x

Solving
40 = 100 + 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.
40 + -1x = 100 + x + -1x

Combine like terms: x + -1x = 0
40 + -1x = 100 + 0
40 + -1x = 100

Add '-40' to each side of the equation.
40 + -40 + -1x = 100 + -40

Combine like terms: 40 + -40 = 0
0 + -1x = 100 + -40
-1x = 100 + -40

Combine like terms: 100 + -40 = 60
-1x = 60

Divide each side by '-1'.
x = -60

Simplifying
x = -60

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