-1.7-(-4.2)=

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Solution for -1.7-(-4.2)= equation: 


Simplifying
-1.7 + -1(-4.2) = 0

Multiply -1 * -4.2
-1.7 + 4.2 = 0

Combine like terms: -1.7 + 4.2 = 2.5
2.5 = 0

Solving
2.5 = 0

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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