Write the Following as an Equation, Using X for the Unknown

question 320

Multiple Choice

Write the following as an equation, using x for the unknown number. Then solve.
-When 3 times a number is subtracted from 7 times the number, the result is 28. Find the number.

• A) 3(x - 7) = 28x; 1.2
• B) 7x - 3x = 28; 7
• C) 3x + 7x = 28; 4
• D) 3x(7 - x) = 28; -7

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