Answer:
D) x = 12
Step-by-step explanation:
Given:

1. Multiply both sides by 4

2. Subtract 3x from both sides

3. Add 28 to both sides

4. Divide both sides by 7 to isolate the variable:

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Answer: y = 2
Explanation:
When x = 3, y = -15
And x and y are directly proportional.
thus x + k ==> y + k
when x = 3 + 17 ==> y = -15 + 17
=> x = 20 ==> y = 2
There is no positive or negative correlation
The answer is in the image. If you convert them to improper fractions, the division is easier. Like 2/3 + 1 = 5/3