Answer:
k=2
Step-by-step explanation:
7(k+8)=70
We move all terms to the left:
7(k+8)-(70)=0
We multiply parentheses
7k+56-70=0
We add all the numbers together, and all the variables
7k-14=0
We move all terms containing k to the left, all other terms to the right
7k=14
k=14/7
k=2
