Let x represent the unknown, and write an equation for the sentence. Do not solve.
-When 90% of a number is subtracted from 30, the result is 7 less than the number.
A)30 - 90x = x - 7
B)0.9x - 30 = x - 7
C)30 - 0.9x = 7 - x
D)30 - 0.9x = x - 7

Question

Quizplus · Accepted Answer

The correct equation is formed by translating the sentence into mathematical terms: 30 (the number from which something is subtracted) minus 90% of a number (0.9x) equals the number (x) minus 7 (x - 7).

Let X Represent the Unknown, and Write an Equation for the Sentence