September 2018 1 48 Report

rozwiąż.

nie tylko wynik, ale całe działanie!

5x-1=3y

a ) { 1,6y-2=4-2x

b) { 1/2 (x-1)+y=-2 1/2

x-7=1-y

c) { 3x-1=y-2

4x-3=-2(y-2)


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