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a)2x+1
b)3y+1
16.
2n-3
0,5n+3
17.
a)
100x
x/100
b)1000t
s/1000
18.a)1000x
x/60/min
x/3600/s
b)60y/min
3600y/h
3600000y/s
20.
a)0,40x
b)0,85x
c)1,12x
21.
a) n: n+1, n+2, n+3
b) N: n-1,n-2,n-3
22.
n-3,n-2,n-1, n, n+1, n+2,
23.
a)n+2, n+4, n+6
b)n+1, n+3, n+5