Which of the following expressions is always equivalent to -2b + 4 + 4b - 7

a. b + b

b. b divided by 2

c. 2b - 3

d. 2b + 4

Skip to content# Which of the following expressions is always equivalent to -2b + 4 + 4b – 7 a. b + b b. b divided by

Mathematics ##
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a. b + b

b. b divided by 2

c. 2b - 3

d. 2b + 4

c. 2b - 3

Step-by-step explanation:

Simplify the following:

-2 b + 4 + 4 b - 7

Grouping like terms, -2 b + 4 + 4 b - 7 = (4 b - 2 b) + (4 - 7):

(4 b - 2 b) + (4 - 7)

4 b - 2 b = 2 b:

2 b + (4 - 7)

4 - 7 = -3:

2 b + -3

Cos(x-90) fits this question

Your answer would be C ! 2b - 3

cos (90° - x) should be the answer