rozwiąż równanie: 96/100x+60/100y=39 x+y=52

96/100x+60/100y=39 |*100 x+y=52 96x+60y=3900 x=52-y 96(52-y)+60y=3900 x=52-y 4992-96y+60y=3900 x=52-y -36y=-1092 |*(-36) x=52-y y=30 i 1/3 x=21 i 2/3

96/100x+60/100y=39 x+y=52 x=52-y 96/100 × (52 - y) + 60y/100 = 39 4992/100 - 96y/100 + 60y/100 = 39 4992/100 - 36y/100 = 39 4992/100 - 39 = 36y/100 1092/100 = 36y/100 36y = 1092 y = 91/3 = 30,(3) x = 21,(6)