40+30-x=60

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Solution for 40+30-x=60 equation:


Simplifying
40 + 30 + -1x = 60

Combine like terms: 40 + 30 = 70
70 + -1x = 60

Solving
70 + -1x = 60

Solving for variable 'x'.

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

Add '-70' to each side of the equation.
70 + -70 + -1x = 60 + -70

Combine like terms: 70 + -70 = 0
0 + -1x = 60 + -70
-1x = 60 + -70

Combine like terms: 60 + -70 = -10
-1x = -10

Divide each side by '-1'.
x = 10

Simplifying
x = 10

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