Question

Calcule o valor real de X em:

a) 3/10 = x/15 
b) 10+x/x = 15/10

Answer 1

A )


3/10 = x/15

10x = 3 * 15

10x = 45

x = 45/10

x = 4,5



B )


10 + x / x = 15 / 10

15x = 100 + 10x

15x - 10x = 100

5x = 100

x = 100 / 5

x = 20





espero ter ajudado