Question

Calcule o valor de X

a) 3/15=x/6

b) 8/x=12/3

c) x+1/5=8/10

d) x-2/7=3/7

Answer 1

a)15x=18
x= 18/15= 6/5

b)12x=24
x= 24/12=2

c)10x+10=40
10x= 40-10
10x= 30
x=30/10=3

d)7x-14=21
7x= 21+14
7x= 35
x= 35/7= 5