Question

a) 4y + 9 = y -6 ?
b) 5y + 2y - 3 =3y + y ?
c) 5 ( 2 + 3y ) =4 -2 (2y +5)

Answer 1

a) 4y + 9 = y -6 ?

4y - y = - 6 - 9

3y = - 15

y= - 15/3

y= - 5

b) 5y + 2y - 3 =3y + y ?

5y + 2y - 3y - y = 3

5y - 4y = 3

y= 3

c) 5 ( 2 + 3y ) =4 -2 (2y +5)

10 + 15y = 4 - 4y - 10

15y + 4y = 4 - 10 - 10

19y = - 6 - 10

19y = - 16

y = - 16/19