Question

Determinati valuarea lui x din urmatoarea proportie a) 9/4=x/16 ; b) 5/8x=15/32

Answer 1

a)
9/4=x/16
9*16=4*x
144=4*x
x=36

b)
5/8*x=15/32
5*32=15*8*x
160=120*x
x=160/120=16/12