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Quotients can sometimes be irrational so it is necessary to estimate them, products on the other hand are only rational, provided they aren't multiplied by an irrational, so it is not necessary to estimate
Answer:
the answer for this question is (y-5)/4=x
Sides that two side is equal so
5x+10=40
5x=30
X=6
The 1st one
y <x-1 and y>=-2x +4
