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1,2x + 0,8y = 1100
I rozwiązujemy :)
x=1000 - y
1,2 ( 1000 - y ) + 0,8y = 1100
x=1000 - y
1200-1,2y + 0,8y = 1100
x=1000 - y
-0,4 y =-100
x=1000-y
y= - 100 / - 0,4
x=1000 - y
y=250
x=1000-250
y=250
x=750
y=250
Proszę o + :)