Zadania z ćwiczeń klasa 6 str 27 zad 15 2x-6=3(x+1) 1/3(y-1)=5y

2x-6=3x+3 3x-2x=-6-3 x=-9

2x-6=3(x+1) 2x-6 = 3x + 3 -x=9 x=-9 1/3(y-1)=5y 1/3y-1/3=5y -4 i 2/3y=1/3 y=-14

2x-6=3(x+1) 2x - 6 = 3x +3 -9 = x 1/3(y-1)=5y 1/3y -1/3 = 5y -1/3 = 4 i 2/3y y = -14