Question

Urgent acum va rog doar la ex.1.3.6
URGENT!!!!DAU COROANA

Answer 1

Răspuns:

Explicație pas cu pas:

Voi rezolva DOAR ce se vede clar

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1)

a)

1/2=3/8=(2*3)/8=6⁽²/8⁽²=3/4

b)

2,5=7,5

25/10=75/10=75*10/25*10=750⁽²⁵⁰/250=3

c)

3a=12

a= 12:3=4

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2)

a)

4/5=x/15

x= (15*4)/4

x=20/4

x= 5

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b)

3/1,2=10/x

x= (10*1,2)/3

x=12/3

x=4

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c)

x/1,8= 2/9

x=( 1,8*2)/9

x= 3,6/9

x= 0,4

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d)

2x/35=4/7

14x= 140

x= 140:14

x=10

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3)

a= 10

b=15

10/2=15/3

10*3=15*2

30=30

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4)

3m.......12 zile

4m ......x zile

x=( 3*4)/12

x= 12/12 =1  (o zi )

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5)

K= CONSTANTA

a= 5K

b=7K

c= 11 K

5K+7K+11K=69

23K=69

k=69:23

K=3

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a= 5K=5*3=15 carti

b=7K=7*3=21 carti

c= 11K=11*3= 33 carti

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6)

nu se vede clar