December 2018 1 19 Report
Metodą podstawiania zrobić to :
a)
{2x+y=1
{-3x+3y=9

b) {3x+2y=2
{-4x-y=0

c)
{8x+2y=-2
{6x+y=0

d{3x+4y=3
{9x-8y=4

e{2x-y=80
{5x-2y=70

f{7x-2y=200
{3x+y=550
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