Question

Find the sum of :

a) 15x and 9x.
b) 12xy and 8xy .
c) 20y and 12y .
d) 17ab and 71 pqr .
e) 17 ab and 19ab.
f) 75s and 15s. ​

Answer 1

Answer:

15x and 9x.= 24x

12xy and 8xy .=20xy

Answer 2

Answer:

15x+9x =24x

12xy+ 8xy =20xy

20y+ 12y =32y

17ab +71ab= 88ab

17ab+19ab =36ab

75s +15 s =90s