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p = 30*8/48
p = 30*1/6
p = 5
b. 5/p = 60/84
p = 60/(84*5)
p = 12/84
p = 1/7
c. (p+1)/4 = 96/120
(p+1)/4 = 4/5
5(p+1) = 4*4
5p+5 = 16
p = (16-5)/5
p = 11/5 = 2,2
d. 5/3 = 75/(6p-3)
6p-3 = 75*3/5
6p-3 = 45
6p = 45+3
p = 8
e. 15/32 = p/(p+2)
15p+30 = 32p
30 = 32p-15p
30 = 17p
30/17 = p
f. 3p/4 = (12-p)/6
18p = 48-4p
18p+4p = 48
22p = 48
p = 24/11
g. 2/9 = p/3
2*3/9 = p
2/3 = p
h. 3:4/8 = 9/p
3*8/4 = 9/p
3*2 = 9/p
6 = 9/p
6/9 = p
2/3 = p