Answer :
For this question you are looking for the value of K. The question is asking what number multiplied with 8 and added with 12 equals 48. So the equation is:
12+8(K)=48
To solve the problem you need to balance the equation by doing the opposite of the equation to the answer until only K remains.
We start with the 12. The equation wants us to add 12 so we subtract it from both sides instead and get the new equation:
12+8(K)=48-12 : 8(K)=36
Now we need to get rid of the 8. The equation wants us to multiply by 8 so we divide it from both sides instead and get the new equation:
K=36/8 : K=4.5
So the answer is K=4.5. Now just to make sure we test the equation with the answer.
12+(8x4.5)=48
12+36=48
48=48
Since the two match we have confirmed that K does indeed equal 4.5.