Question

Find 3/7 + 6/11 + (-8/21)​

Answer 1

Answer:

3 + 6 + -8

7 11 21

lcm of 7, 11 and 21 is 231

(3×33)+(6×21)+(-8×11)

231

99+126+(-88)

231

225-88

231

137

231

hope it helps.