Heart of Algebra Problem

from 320 SAT Math Problems

Today I’d like to give you a problem from 320 SAT Math Problems arranged by Topic and Difficulty Level. This one is a Level 4 Heart of Algebra problem. I will provide a solution tomorrow.

Level 4 Heart of Algebra

2x + 5 + k = 7x
2y + 5 + t = 7y

In the equations above, k and t are constants. If t is k minus 1/3, which of the following is true?

(A) x is y minus 1/3
(B) x is y minus 1/15
(C) x is y plus 1/3
(D) x is y plus 1/15

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