Question

Срочно. Решить. A) (-3/4) - (+1/4) b) (-3/16) - (+5/8) c) (-3/8) - (-3/4) d) (-2 3/5) - 6 4/7 e) (-1 3/9) - (-1 8/5) f) (-5 4/5) - 3/8 g) (-1 7/20) - (-1,35) h) 3,5 - (-1 2/25) i) -2,65 - (-2 13/20)

Answer 1

Ответ:

Пошаговое объяснение:

A) (-3/4) - (+1/4)=-3/4-1/4=-1

b) (-3/16) - (+5/8)=-3/16-10/16=-13/16

c) (-3/8) - (-3/4)=-3/8+6/8=3/8

d) (-2 3/5) - 6 4/7=-2 21/35-6 20/35=-9 6/35

e) (-1 3/9) - (-1 8/5)=-1 3/9+2 3/5=-1 15/45+2 27/35=1 12/35

f) (-5 4/5) - 3/8=-5 32/40-15/40=-6 7/40

g) (-1 7/20) - (-1,35)=-1,35+1,35=0

h) 3,5 - (-1 2/25)=3,5+1,08=4,58

i) -2,65 - (-2 13/20)=-2,65+2,64=0

Answer 2

Давайте решим эти математические задачи:

a) (-3/4) - (+1/4) = -3/4 - 1/4 = -4/4 = -1

b) (-3/16) - (+5/8) = -3/16 - 10/16 = (-3 - 10)/16 = -13/16

c) (-3/8) - (-3/4) = -3/8 + 3/4 = -3/8 + 6/8 = ( -3 + 6 )/8 = 3/8

d) (-2 3/5) - 6 4/7 = (-13/5) - (46/7) = (-13/5) - (46/7) * (5/5) = (-13/5) - (230/35) = (-13/5) - (230/35) = (-13/5) - (46/7) = (-91/35) - (230/35) = (-91 - 230)/35 = -321/35 = -9 6/35

e) (-1 3/9) - (-1 8/5) = (-1 - 1) + (8/5 - 3/9) = -2 + (72/45 - 15/45) = -2 + (57/45) = -2 + 19/15 = (-30/15) + (19/15) = -11/15

f) (-5 4/5) - 3/8 = (-29/5) - (3/8) * (40/40) = (-29/5) - (120/40) = (-29/5) - (3) = (-29/5) - (15/5) = (-29 - 15)/5 = -44/5 = -8 4/5

g) (-1 7/20) - (-1,35) = (-1 - (-1.35)) = (-1 + 1.35) = 0.35

h) 3,5 - (-1 2/25) = 3.5 + 1 2/25 = 3.5 + (25/25 + 2/25) = 3.5 + 27/25 = (87/25) = 3 12/25

i) -2.65 - (-2 13/20) = -2.65 + 2 13/20 = -2.65 + (40/20 + 13/20) = -2.65 + 53/20 = (-265/100) + (53/20) = (-53/20) + (53/20) = 0

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