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-6=5a+b
-2=7a-b
-6=5a+b
-12a=8/÷-12
a=2/3
2=-7×2/3+b
-b=-4i1/3-2
-b=-6i1/3/×-1
b=6i1/3
y=2/3x+6i1/3
to wszystko 2/3 oznacza dwietrzecie a 6i1/3 to 6 i jedna trzecia
prosze o najlepsze rozwiazanie.pozdrawiam