-(-2 2/3) +7/15=
1 5/8 - (-2 2/3+ 0,25)=
3 1/2 - 3 1/6:(-2 1/9)=
(-1 1/7 x 1 11/24): 3/5=
-(-2 2/3) +7/15 = 8/3+7/15 = 40/15+7/15 = 47/15 = 3 2/15
1 5/8 - (-2 2/3+ 0,25) = 13/8-(-8/3+1/4) = 39/24-(-64/24+6/24) = 39/24-(-58/24) = 39/24+58/24 = 97/24 = 4 1/24
3 1/2 - 3 1/6:(-2 1/9) =7/2-19/6:(-19/9) = 7/2-19/6*(-9/19) = 7/2+3/2 = 10/2 = 5
(-1 1/7 x 1 11/24): 3/5 = (-8/7 * 35/24) :3/5 = (-5/3):5/3 = (-5/3)*3/5 = -1
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-(-2 2/3) +7/15 = 8/3+7/15 = 40/15+7/15 = 47/15 = 3 2/15
1 5/8 - (-2 2/3+ 0,25) = 13/8-(-8/3+1/4) = 39/24-(-64/24+6/24) = 39/24-(-58/24) = 39/24+58/24 = 97/24 = 4 1/24
3 1/2 - 3 1/6:(-2 1/9) =7/2-19/6:(-19/9) = 7/2-19/6*(-9/19) = 7/2+3/2 = 10/2 = 5
(-1 1/7 x 1 11/24): 3/5 = (-8/7 * 35/24) :3/5 = (-5/3):5/3 = (-5/3)*3/5 = -1