Question

x+7/3+2/15=3/8

Answer 1

ok so first add 7/3 and 2/15 together
to do that you have to find a common deominator which is 15

Answer 2

7/3=35/15
35/15+2/15=37/15
your problem should now look like this:
x+37/15=3/8
now you have to find a common denominator for 3/8 and 37/15 so that you can do subtraction

Answer 3

our common denominator will be 120
37/15=296/120
3/8=45/120
your problem now looks like this:
x+296/120=45/120
subtract 296/120 from both sides
x=-251/120

Answer 4

This can be simplified to
-2 (11/120)