November 2018 1 37 Report

Podaj działanie jakie należy wykonać po obu stronach pierwszego nich, aby otrzymać drugie.

a)2x+2y=2y+5

2x=y+5

b) x+y=2yy+1

3x+y=2x+2y+1

Tu chodzi o to, że np.:

2x+4y=6//:2

x+2y=3


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