Proporcje Rozwiąż równania 1)3/x = 5/7 2)8/3,5=4/y 3)5/6=1+t/10

1)3/x = 5/7 5x = 3*7 5x = 21 |:5 x = 21/5 x = 4 i 1/5 x = 4,2 2)8/3,5=4/y 8y = 4*3,5 8y = 14 |:8 y = 14/8 y = 7/4 y = 1,75 3)5/6=1+t/10 6(1+t) = 5*10 6+6t = 50 6t = 50-6 6t = 44 |:6 t = 44/6 t = 22/3 t = 7 i 1/3