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SanyaGames123
@SanyaGames123
August 2022
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Решите примеры пожалуйста. По действиям.
№1: ( 2 5/18 - 5 1/12 + 1 2/9) * ( 0,81 : 0,4)
№2: -1,5 : 0,5 * ( 3 8/15 - 4 1/18 - 1 1/5)
№3: -3,075 : 1,5 + 0,5 * ( 0,04 - 3 4/25)
№4: (0,0612 : 0,6 - 2/5) * 0,5 - 0,5
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jekadva
(1)
1) 2 5/18 -5 1/12= 2 10/36 - 5 3/36 = - 2 29/36
2)-2 29/36+1 2/9=-(2 29/38 - 1 8/36)= -1 21/36 = -1 7/12
3) 0,81:0,4=2,025=2 1/40
4) - 1 7/12 * 2 1/40=-19/12 * 81/40=-513/160= -3 33/160
(2)
1) 3 8/15 - 4 1/18 = 3 48/90 - 4 5/90 = -47/90
2) -47/90 - 1 1/5= -(47/90 + 1 18/90)=- 1 65/90 = - 1 13/18
3) -1,5:0,5 =-3
4) -3 *(-1 13/18)= -3 * (-31/18)= 31/6 = 5 1/6
(3)
1) -3,075:1,5= -2,05
2) 0,04 - 3 4/25=0,04 - 3,16=-3,12
3) 0,5*(-3,12)= -1,56
4) -2,05 - 1,56= -3,61
(4)
1) 0,0612:0,6=0,102
2) 0,102 - 2/5=0,102 - 0,4 = -0,298
3) -0,298 * 0,5 =-0,149
4) -0,149 - 0,5= -0,649
30 votes
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Answers & Comments
1) 2 5/18 -5 1/12= 2 10/36 - 5 3/36 = - 2 29/36
2)-2 29/36+1 2/9=-(2 29/38 - 1 8/36)= -1 21/36 = -1 7/12
3) 0,81:0,4=2,025=2 1/40
4) - 1 7/12 * 2 1/40=-19/12 * 81/40=-513/160= -3 33/160
(2)
1) 3 8/15 - 4 1/18 = 3 48/90 - 4 5/90 = -47/90
2) -47/90 - 1 1/5= -(47/90 + 1 18/90)=- 1 65/90 = - 1 13/18
3) -1,5:0,5 =-3
4) -3 *(-1 13/18)= -3 * (-31/18)= 31/6 = 5 1/6
(3)
1) -3,075:1,5= -2,05
2) 0,04 - 3 4/25=0,04 - 3,16=-3,12
3) 0,5*(-3,12)= -1,56
4) -2,05 - 1,56= -3,61
(4)
1) 0,0612:0,6=0,102
2) 0,102 - 2/5=0,102 - 0,4 = -0,298
3) -0,298 * 0,5 =-0,149
4) -0,149 - 0,5= -0,649