Which properties were used to prove that the expressions 7 x + 4 minus x minus 2 and 6 x + 2 are equivalent? 7 x + 4 minus x minus 2. 7 x minus x + 4 minus 2. (7 minus 1) x + 4 minus 2. 6 x + 2.

idk what the heck he answer is, i’m just putting this here so i finish my account

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sin y = 7/q

7 is the opposite side length, q is the hypotenuse

tan y = 7/r

7 is the opposite side length, r is the adjacent side length

using sohcahtoa ^^^^

cos y = adjacent/hypotenuse

cos y = r/q

15 / 2 = 7.5

100 / 7.5 = 13.