Question

Ex 24 și 25 repede ca dacă îi corect răspunsul dau COROANA

Answer 1

25) a)
x×21=50
21x=50
x=50/21
x=2.4

b)
54x=20
x=20/54
x=10/27
x=0.37037

c)
2/3x=20
3/2×2/3x=3/2×20
x=3×10
x=30

d)
4=1/3x
3×4=3×1/3x
12=x
x=12

e)
x×1/2=3/4
1/2x=3/4
2×1/2x=2×3/4
x=3/2
x=1.5

f)
 x/100×3=4
3x/100=4
3x=400
x=400/3
x=133.3(3)