x-(-30)=100-9

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Solution for x-(-30)=100-9 equation:


Simplifying
x + -1(-30) = 100 + -9

Multiply -1 * -30
x + 30 = 100 + -9

Reorder the terms:
30 + x = 100 + -9

Combine like terms: 100 + -9 = 91
30 + x = 91

Solving
30 + x = 91

Solving for variable 'x'.

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

Add '-30' to each side of the equation.
30 + -30 + x = 91 + -30

Combine like terms: 30 + -30 = 0
0 + x = 91 + -30
x = 91 + -30

Combine like terms: 91 + -30 = 61
x = 61

Simplifying
x = 61

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