X=7-3 and y = 6/19 evaluate (a) xy and (b) x divide y

Question

asked Apr 1, 2024 38.2k views

2 Answers

Kannan Prasad · Answer 1 · 2024-04-05T14:10:41+0000

With the values of x and y, I will evaluate the little expressions, which, in this case, are xy and x/y.

So I'll start with the first one, xy. The question clearly states that x = 7/3 and y = 6/19, so I stick this into the expression, and it gives me

$(7)/(3) \cdot(6)/(19)$

7 is hereupon multiplied by 6, and 3 is hereupon multiplied by 19:

$(7\cdot6)/(3\cdot19)$

(42)/(57)

Divide by 3:
(42/ 3)/(57 / 3) =(14)/(19)

This cannot be simplified further, so we leave the answer as it is (14/19)

In the second one, x/y, we do the same thing, only this time, I am going to divide:

(7)/(3) /(6)/(19)

Rewrite this as

$(7)/(3) \cdot(19)/(6)$

Multiply:

$(7\cdot19)/(3\cdot6)$

(133)/(18)

The answer to xy is 14/19; the answer to x/y is 133/18.