Remove parentheses and simplify the expression.
-1 + 3(10 - 7m)
A)-7m + 31
B)-21m + 30
C)21m + 31
D)-21m + 31

Question

Quizplus · Accepted Answer

Using the distributive property, we can simplify the expression as follows:
1 + 3(10 - 7m) = 1 + 30 - 21m = 31 - 21m
Therefore, the simplified expression with removed parentheses is -21m + 31. The answer is choice D. Distributing the 3 to the terms inside the parentheses, we get:

1 + 3(10) - 3(7m)
1 + 30 - 21m
31 - 21m

Therefore, the simplified expression is -21m + 31, so the best choice is D.

Remove Parentheses and Simplify the Expression