Question

3a/2.5 - 2a/10 = 4a/5 find a​

Answer 1

Answer:

0

Step-by-step explanation:

3a/2.5=12a/10

Therefore, 12a/10-2a/10=4a/5=8a/10

-->10a/10=8a/10

-->a=8a/10

-->Therefore, solution to equation is a=0

Hope you understood,

Please mark as brainliest.

Answer 2

Answer:

If x+y=13 and xy=25/4 then we can calculate x-y by using some identities

We know that (x+y)^2 - 4*xy = (x-y)^2

There for by substituting the values for x+y and xy we be the value of (x-y)^2=144

This implies that x-y=12