Question

Vaaaa roooggg multttt!!!​

Answer 1

7. a) 4x=24 <=> x=6

b) x=6*10/5 <=> x=60/5 <=>x=12

c)x=60*3/45 <=>x = 180/45 <=> x=4

d) x=34*2/17 <=> x= 68/17 <=>x =4

e) x= 70*8/5 <=> x= 560/5 <=> x= 112

8. spatiul gol punem x  si facem proporti

a) x= 7*5/12 <=> x= 35/12 =

b) x= 24*8/96 <=> x=  192/96 <=>x=2

c) x= 3*2/15 <=> x= 6/15 <=> x=0.4

d) x= 2*2/15 <=> x= 4/15  <=> x=0.26

e) x= 7*8/3 <=> x= 56/3 <=> x=18.67

f) x= 12*5/3 <=> x= 60/3 <=> x=20

g) x= 1*7/9 <=> x=7/9 <=> x=  0.77

h) x = 23*18/5 <=> x= 414 /5 <=> x= 82.8

i) x= 12*4/7 <=> x= 48/7 <=> x= 6.85

9. a*b= 4.1*2,(5) = 10.477777(5)

Answer 2

Răspuns:

7) a) x=3×8 24

------ => -------- <==> 24:4=6

4 4

x=6

b) x=10×6 60

--------- => ------- <==> 60:5=12

5 5

x=12

c) x=3×60 180

--------- => ------- <==> 180:45=4

45 45

x=4

d) x= 2×34 68

------- => ----- <==> 68:17= 4

17 17

x=4

e) x= 8×70 560

------ => -------- <==> 560:5=112

5 5

x=112

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