Question

how do you do this kind of problems : one number is 3 more than half another number. the sum of the numbers is 15

Answer 1

x + y = z

x = 3y
z = 15

3y + y = 15

Answer 2

almost had it, gotta be good at reading

Answer 3

x = y/2+3

Answer 4

y/2 +3 +y = 15

y +6 +2y = 30

3y = 24

y = 8

Answer 5

x = 7 then; since 8/2 = 4 + 3 = 7