What is the solution of the equation: -12 = 4.7k + 11.5

k=-5

Step-by-step explanation:

-12=4.7k+11.5

switch sides - 4.7k+11.5=-12

multiply both sides by 10 - 4.7k times 10 +11.5 times 10=-12 times 10

refine - 47k+115=-120

subtract 115 from both sides - 47k+115-115=-120-115

simplify it - 47k=-235

divide both sides by 47 - 47k/ 47= -235/ 47

simplify - k =-5

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!