Question

Determinati x din proportile a)x supra 2,5=4supra 15
b) 14 supra 5=28sulpra x-7URGENT VA ROGGGGGG 

Answer 1

a) 15x=10
x=$\frac{2}{3}$
b) (x-7)14=140
14x-98=140
14x=238
x=17