3/6 + 1/3 is equivalent to

3/6+1/3=

Step-by-step explanation:

3/6 + 2/6= 5/6

9/18 + 6/18= 15/18 which is the same as 5/6 if you divide by 3

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: