3/4 + 2.6 = 3/4 + 2 6/10 = 3/4 + 26/10 = (310 + 264) / (4*10) = (30 + 104) / 40 = 134 / 40 = 67 / 20 = 3 7/20
-1 1/2 + (-0.26) = -1 1/2 - 26/100 = -1 1/2 - 13/50 = (50*(-1) - 13) / 50 = (-50 - 13) / 50 = -63/50 = -1 13/50
2.05 + (-3 3/5) = 2.05 - 3 3/5 = 2.05 - 18/5 = (2.05100 - 185) / 100 = (205 - 90) / 100 = 115 / 100 = 1.15
-0.25 + (-5/6) = -0.25 - 5/6 = -0.25 - 25/6 = (-25 - 25) / 6 = -50/6 = -8 2/3
2.8 + (-1 3/10) = 2.8 - 1 3/10 = 2.8 - 13/10 = (28*10 - 13) / 10 = (280 - 13) / 10 = 267 / 10 = 26 7/10
-0.4 + 4/15 = -0.4 + 4/15 = -0.4 + 16/60 = -0.4 + 16/60 = (-40 + 16) / 60 = -24 / 60 = -2/5
3/4 + 2.6 = 3/4 + 2 6/10 = 3/4 + 26/10 = (310 + 264) / (4*10) = (30 + 104) / 40 = 134 / 40 = 67 / 20 = 3 7/20
-1 1/2 + (-0.26) = -1 1/2 - 26/100 = -1 1/2 - 13/50 = (50*(-1) - 13) / 50 = (-50 - 13) / 50 = -63/50 = -1 13/50
2.05 + (-3 3/5) = 2.05 - 3 3/5 = 2.05 - 18/5 = (2.05100 - 185) / 100 = (205 - 90) / 100 = 115 / 100 = 1.15
-0.25 + (-5/6) = -0.25 - 5/6 = -0.25 - 25/6 = (-25 - 25) / 6 = -50/6 = -8 2/3
2.8 + (-1 3/10) = 2.8 - 1 3/10 = 2.8 - 13/10 = (28*10 - 13) / 10 = (280 - 13) / 10 = 267 / 10 = 26 7/10
-0.4 + 4/15 = -0.4 + 4/15 = -0.4 + 16/60 = -0.4 + 16/60 = (-40 + 16) / 60 = -24 / 60 = -2/5