x-(-9.9)=7.9

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Solution for x-(-9.9)=7.9 equation: 


Simplifying
x + -1(-9.9) = 7.9

Multiply -1 * -9.9
x + 9.9 = 7.9

Reorder the terms:
9.9 + x = 7.9

Solving
9.9 + x = 7.9

Solving for variable 'x'.

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

Add '-9.9' to each side of the equation.
9.9 + -9.9 + x = 7.9 + -9.9

Combine like terms: 9.9 + -9.9 = 0.0
0.0 + x = 7.9 + -9.9
x = 7.9 + -9.9

Combine like terms: 7.9 + -9.9 = -2
x = -2

Simplifying
x = -2

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