Frequent Questions about our Solver

The problem

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Why -7x with different sign you subtract ?

Answer provided by our tutors

(-x+13) retains "-x"

-(6x+34) becomes "-6x-34" as the negative symbol '-' propagates through (6x+34)

-x-6x = -7x

...clicking on a particular solution step allows you to quickly review the logic which is applied:

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