Question

2. Solve: 21 - 3(a - 7) = a + 20
(2 Points)
a = 5.5​

Answer 1

Answer:

a=5.5

Step-by-step explanation:

By Solving this, we get,

21-3(a-7)=a+20

=21-3a+21=a+20

=42-3a=a+20

=42-20=a+3a

=22=4a

a=22/4=5.5