Question

determinati numarul necunoscut din proportiile a)x/3=16/9,avem x=3*16/9=16/3
b)15/y=5/8
c)18/7=z/9
d)4/13=3/t
e)u/20=7/9

Answer 1

b) 15/Y = 5/8
Y = 15×8/5 = 3×8 = 24

c) 18/7 = Z/9
Z = 18×9/7 = 162/7

d) 4/13 = 3/t
t = 13×3/4 = 39/4

e) u/20 = 7/9
u = 20×7/9 = 140/9