September 2018 1 12 Report

Oblicz metodą podstawiania:

a)2x+y=1

y=-x+4

b)2x-y=4

x=5+y

c)x-y=1

x+2y=4

d)3x-y=-4

y=1\3x-4\3

e)2x-3y=1

x+1\2y=-2

f)x-y=17

2(x-1)=3y


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