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Kristoforeska
@Kristoforeska
July 2022
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Помогите пожалуйста с примерами:
1) - (14,05 - 1 1/4) : 0,04 - 13,8*13 =
2) 2х + (1/3х - 1 1/9) * (-2 1/4)= -3/5
3) 4*0,85 - 1/7 : 5/14 - 1,56 : (-0,3)=
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tatsach
1) - (14,05 - 1 1/4) : 0,04 - 13,8*13 =
- (14,05 - 1 1/4)=-14,05 +1 1/4=-14.05+1.25=-12.8
-12.8:0.04=-320
13.8*13=179.4
-320-179,4=-499.4
2) 2х + (1/3х - 1 1/9) * (-2 1/4)= -3/5
2х-0.75x+2.5=-0.6
2х-0.75х=-0.6-2.5
1.25х=-3.1
х=-3.1:1.25
х=-2.48
3) 4*0,85 - 1/7 : 5/14 - 1,56 : (-0,3)=
4*0,85=3.4
1/7:5/14=1/7*14/5=14/35=0.4
1.56:(-0.3)=5.2
3.4-0.4=3
3-5.2=-2.2
1 votes
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Answers & Comments
- (14,05 - 1 1/4)=-14,05 +1 1/4=-14.05+1.25=-12.8
-12.8:0.04=-320
13.8*13=179.4
-320-179,4=-499.4
2) 2х + (1/3х - 1 1/9) * (-2 1/4)= -3/5
2х-0.75x+2.5=-0.6
2х-0.75х=-0.6-2.5
1.25х=-3.1
х=-3.1:1.25
х=-2.48
3) 4*0,85 - 1/7 : 5/14 - 1,56 : (-0,3)=
4*0,85=3.4
1/7:5/14=1/7*14/5=14/35=0.4
1.56:(-0.3)=5.2
3.4-0.4=3
3-5.2=-2.2