<span>let x be the interval, then:
186 = 50 + 3 + (3+x) + (3+2x) + (3+3x) + (3+4x) + (3+5x) + (3+6x) + (3+7x)
186 = 74 + 28x
x = 4
Eldest son age = 3+7x = 3+28 = 31.</span>
Jen has 46 more than Jay, “Jen has 46 more than Jay.” You answered your own question.
Maybe you meant solve for x?
If so, the answer is 4
The answer is 8700. there you go sir or ma'm!
Here's a graph with 4 points shown.
