Answer:
29/5 or 5.8
Step-by-step explanation:
6+5(a−1)=30
first it would be good to distribute:
6+5(a-1)=30 -> 6+(5)(a)+(5)(−1)=30 which simplifies to 6+5a+−5=30
at this point it is best to rearrange:
(5a)+(6+−5)=30 which simplifies to 5a+1=30
from then on its a matter of doing opposite operation. at my school we would call this the "equality" method. what you do to one side you do the other.
Observe:
5a+1=30
-1 -1
5a=29
5a/5=29/5
a=29/5 (in decimal it would be like 5.8)
I hope this is helpful!
