Odpowiedzi

2010-03-30T21:12:11+02:00

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
5 4 5