BŁAGAM POMÓZCIE !!! TO JEST MI NA JUTRO PORZEBNE. Zdjęcie z 2 zadaniami w załączniku ;D z góry dzięki ;) x
Zadanie 1
a) x=3 x=3 x=3 x=3 x=3
y+2x=7 y+2*3=7 y+6=7 y=7-6 y=1
b) y=2 y=2 y=2 y=2 y=2
2x+y=8 2x+2=8 2x=8-2 2x=6/:2 x=3
c) x=-2 x=-2 x=-2 x=-2 x=-2 x=-2
3y+7x=1 3y+7*(-2)=1 3y-14=1 3y=1+14 3y=15/:3 y=5
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Zadanie 1
a) x=3 x=3 x=3 x=3 x=3
y+2x=7 y+2*3=7 y+6=7 y=7-6 y=1
b) y=2 y=2 y=2 y=2 y=2
2x+y=8 2x+2=8 2x=8-2 2x=6/:2 x=3
c) x=-2 x=-2 x=-2 x=-2 x=-2 x=-2
3y+7x=1 3y+7*(-2)=1 3y-14=1 3y=1+14 3y=15/:3 y=5