Question

The sum of x and y
5 times a is addedto b
thesum of number x and y is multiplyed by 3​

Answer 1

x+y=5a

5a is added to b which is the sum of x and y multiplied by 3. That is, b=x+y×3=5a×3=15a

Since, 5a is added to b= 5a+15a=20a,