Question

If a 2b - 10 and b= 3a -5, then what is a?

Answer 1

a=4

Explanation:

we fill in b to find a

a=2(3a-5)-10

a=6a-10-10

a=6a-20

+20 +20

a+20=6a

-a. -a

20=5a

/5. /5

4=a

hopes this helps