Maths
posted by Paula .
I got the last question so please don't worry..
These are the ones I get confused with.
7y +21 x  15 = 4y 12 + 13
I need to see the numberical working out asap if someone would be so kind .. thanks P

7y +21 x  15 = 4y 12 + 13
I assume that once again, you are solving for y ?
7y  4y = 12 + 13 + 15  21x
3y = 16  21x
divide each term by 3
y = 16/3  7x