1) 15 4/9−4 4/93 3/8 = 15 + 4/9 - 4 - 4/9 3 + 3/8= 11 5/9 - 1 1/3= 10 8/9
2) 81/88(6−1 13/151 19/21) = 81/88(6 - 1 - 13/15 1 - 19/21)= 81/88(5 - 13/15 - 19/21)= 81/88(5 - 26/15 - 19/21)= 81/88(5 - 78/15 - 38/21)= 81/88(5 - 5 3/5 - 1 5/21)= 81/88(5 - 6 3/5)= 81/88(-1 3/5)= -27/88
3) (5 1/16−1 1/8)(5/6 + 3/14) = 5 + 1/16 - 1 - 1/8 5/6 + 3/14= 4 15/16 5/6 + 3/14= 4 15/16 5/6 + 3/14= 4 15/16 5/6 + 3/14= 4 5/6 + 15/16 * 5/6 + 3/14= 20/6 + 15/96 + 3/14= 10/3 + 5/32 + 3/14= 320/96 + 15/96 + 18/96= (320 + 15 + 18) / 96= 353 / 96
4) 5 1/16−1 1/8(5/6 + 3/14) = 5 + 1/16 - 1 - 1/8 5/6 + 3/14= 4 15/16 5/6 + 3/14= 20/16 5/6 + 3/14= 5/4 * 5/6 + 3/14= 25/24 + 3/14= 175/168 + 36/168= (175 + 36) / 168= 211 / 168
1) 15 4/9−4 4/93 3/8 = 15 + 4/9 - 4 - 4/9 3 + 3/8
= 11 5/9 - 1 1/3
= 10 8/9
2) 81/88(6−1 13/151 19/21) = 81/88(6 - 1 - 13/15 1 - 19/21)
= 81/88(5 - 13/15 - 19/21)
= 81/88(5 - 26/15 - 19/21)
= 81/88(5 - 78/15 - 38/21)
= 81/88(5 - 5 3/5 - 1 5/21)
= 81/88(5 - 6 3/5)
= 81/88(-1 3/5)
= -27/88
3) (5 1/16−1 1/8)(5/6 + 3/14) = 5 + 1/16 - 1 - 1/8 5/6 + 3/14
= 4 15/16 5/6 + 3/14
= 4 15/16 5/6 + 3/14
= 4 15/16 5/6 + 3/14
= 4 5/6 + 15/16 * 5/6 + 3/14
= 20/6 + 15/96 + 3/14
= 10/3 + 5/32 + 3/14
= 320/96 + 15/96 + 18/96
= (320 + 15 + 18) / 96
= 353 / 96
4) 5 1/16−1 1/8(5/6 + 3/14) = 5 + 1/16 - 1 - 1/8 5/6 + 3/14
= 4 15/16 5/6 + 3/14
= 20/16 5/6 + 3/14
= 5/4 * 5/6 + 3/14
= 25/24 + 3/14
= 175/168 + 36/168
= (175 + 36) / 168
= 211 / 168