3 by 7 minus 4 by 9 - 11 by 7 plus 7 by 9
Answers
Answered by
0
Answer:
17/21
Step-by-step explanation:
3/7 - 4/9 - 11/7 + 7/9
= 27 - 28 - 99 + 49 / 63 ( LCM of 7 and 9 is 63 )
= (27+49) - (28+99) / 63
= 76 - 127 / 63
= - 51 / 63
= - 17 / 21 ( divided by 3 )
Similar questions