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3/5 + 5/3 = 9/15 +25/15 =34/15
15/7 × 21/9 = 15/7 × 7/3 =5 (7 dicoret )
34/15 -5 =34/15 - 75/15 = -41/15 = -2 11/15 (B)

Langsung aja y

(3/5 + 1 ⅔) - 2 1/7 × 21/9

(3/5 + 5/3) - 15/7 × 21/9

(9/15 + 25/15) - 15/3

34/15 - 5

34/15 - 75/15

- 41/15

- 2 11/15

jawabannya B

semoga berguna +_+