If 3/x=7 and 4/y=12, then x-y=?

x-y=

Step-by-step explanation:

To find x, you divide 3 by 7.

i.e.

7x = 3

Divide both sides of the equation by 7

i.e.

x =

To find y, you also divide 4 by 12.

i.e.

12y = 4

Divide both sides by 12.

i.e.

y =

Therefore, x-y would be:

=

Find the Lowest Common Multiple of 7 and 3 which is 21.

=

=

Hope this helps!!!

13cm

step-by-step explanation:

(apex)

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.