Question

Resolva as seguintes proporções:

A)x/10 = 7/2

B)5/6 = 5/x+2

Answer 1

a)
x × 2= 7 × 10
2x= 70
x= 70÷2
x= 35

b) 5 × (x+2)= 6 × 5
5x+ 10= 30
5x= 30-10
5x= 20
x= 20÷5
x=4