Answer:
See below.
Step-by-step explanation:
4(18-3k)=9(k+1)
72-12k=9k+9
+12k +12k
72=21k+9
-9 -9
63=21k
/21 /21
3=k
-hope it helps
Answer: k= 83/21
Step-by-step explanation:
Distribute the 4 to each number/constant in the parentheses:
First multiply 4 and 18 to get 72
Then 4 and -3k to get -12 k
this gives you 72 - 12k
Same for the other side:
9(k)+9(1)= 9k+9
now that you set them them up next to eachother, 72-12k = 9k+9, combine like terms and get the numbers with the variable k on one side. To do this, you can add 12k to both sides and subtract 9 from both sides to get: 63=21k
Finally, divide both sides by 21 so you are left with k= 3
