jetblackcap jetblackcap

15-08-2018
Mathematics

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choixongdong choixongdong

15-08-2018

(6x+6) / (9x - 9) = 32/24

6(x+1) / 9(x-1) = 4/3

(x+1) / (x - 1) = (4/3 * 3/2)

(x+1) / (x - 1) = 2

x + 1 = 2(x - 1)

x + 1 = 2x - 2

x = 3

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