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SOLUTION: How do uSimplify (5x+4)-(6x+2)?
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Algebra: Radicals -- complicated equations involving roots
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Question 569540
:
How do uSimplify (5x+4)-(6x+2)?
Answer by
KMST(3791)
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I find that a minus sign is easier to deal with if I see it as part of the number that follows it. If I do not see a number, the number is an invisible 1. So for
, I see
. And for
, I see
.
For the problem above, I prefer to believe that I am seeing
I do not write it that way, but I see it that way in my mind, and that helps me keep the signs straight.
Otherwise, you have to remember (and hopefully justify to yourself) that to eliminate a set of brackets right after a minus sign, you also have to reverse all the signs inside the brackets, so that -(6x+2)=-(+6x+2) turns into
.