5. If x=8 and y=3, find the value of 4/x - 1/y. well i would substitute 8 for x and 3 for y. then it would be 4/8 - 1/3.

Question

0.5 - 0.33333
would it then be 0.2333?

8. If x=6 and y=5, find the value of x/8 + 2/y.
well i would substitute 6 for x and 5 for y. then it would be
6/8 + 2/5
0.75 + 0.4
would it then be 1.15?

Answer 1

I suspect your teacher wants fractional answers....exact.

4/8 -1/3= (12-8)/24=4/24= 1/6 which is not even close to your answer.

8) 6/8 + 2/5= (30+16)/40=46/40=23/20

Answer 2

so yhu just find a common denominator???