Question

10a+5(a-3)=15

Answer 1

distribute the 5 into (a-3)

Answer 2

then its 10a +5a-15.
then then add 15 to both sides.
then it is 10a+5a=30

Answer 3

and then its 15a=30 and divide by fifteen it ='s 2

Answer 4

2

Answer 5

a=2