y -3x =1
add 3x to each side
y = 3x+1
The coefficient for x is 3 and the constant is 1
Step-by-step explanation:
There is figures in you question. Please check your question.
So,
One tenth of 24 is the same as this:

Multiply
S1: 7x - 4x - 2 = 6 OK
S2: 3x - 2 = 6 OK
S3: 3x - 2 + 2 = 6 WRONG, correct is 3x - 2 + 2 = 6 + 2
Answer: c. Step 3, because a number has been added only to one side of the equation.
About 190% because its almost two times the original number
I hope that answers your question