1) ((6/14)(2/13) =12/182 =6/91(5/2)) =13/455+2/7= 84+910/3185 = 994/3185

2) 9/7+6/5 =45/42 =15/14-18/12 =180-252/168 =-72/168 =-12/28-1/15 =-180-28/420 = 152/420 =76/210

3)3/9-16/4 =12-144/36 =-132/36 =-33/9+25/1 =33+225/9 =258/9 =86/3

4)25 -16 -48 -76 +65 +82 -45 +12 = -1

9 -39 -115 -50 32 -13 -1

5) (2) (-9)(3)(-8)(7)(-6)(5)(4)(16)(-2) = -11612160

-18 54 -432 3024 -18144 90720 362880 -11612160

6) 11/3+22/8 =88+66/24 =154/24 =77/24-3/4 =308-36/48 =272/48 =136/24

7)((13/6)(33/4) =429/24 =143/8 /(19/16)) =2288/52 =286/19+22/1 =286+418/19 =704/19-18/1 =704-342/19 =362/19

8) 17-13+62-((33/13)(15/3)/3) =65.58
(33/13)( 15/3) =495/393/1 = 495/117 =.42
4 66 65.58

.2 .47 .13
9) (17)(1/15)(-4)(-6)(-2/7)(1/6)(45/6)(-2) =9.9
3.4 -13.6 -81.6 -38.3 4.9 -9.9

10) -15+15-48-65-36+52+89-79+62-69 =74
0 -48 -17 -19 71 160 81 143 74