Question

aflati numarul x din proportiile:a) X supra 14= 3 supra 7 b) 9 supra 4=X supra 2 c) 4 supra 5= 32 supra X​

Answer 1

Răspuns:

a)x/14=3/7 <=>7x=42<=> x=42:7 <=> x=6

b)9/4=x/2 <=>4x=18 <=> x=18:4 <=>x=4,5

c)4/5=32/x <=>4x=160 <=> ×=160:4 <=>x=40