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Simplifying -3.9 + -0.3 = -1.7 Combine like terms: -3.9 + -0.3 = -4.2 -4.2 = -1.7 Solving -4.2 = -1.7 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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