Question

Select the expression equivalent to (2.1x+4.3)−(−3x−7).

A −0.9x−2.7
B −0.9x+11.3
C 5.1x−2.7
D 5.1x+11.3

Answer 1

ANSWER: D 5.1x+11.3

Step-by-step explanation:

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Answer 2

D

Step-by-step explanation:

`(2.1x + 4.3) - ( - 3x - 7) \\ = 2.1x + 4.3 + 3x + 7 \\ = 5.1x + 11.3`