a, \(6.63=9.42\)
\(\Rightarrow\dfrac{6}{9}=\dfrac{42}{63};\dfrac{63}{9}=\dfrac{42}{6};\dfrac{6}{42}=\dfrac{9}{63};\dfrac{63}{42}=\dfrac{9}{6}\)
\(b,0,24.1,61=0,84.0,64\)
\(\Rightarrow\dfrac{0,24}{0,84}=\dfrac{0,64}{1,61};\dfrac{1,61}{0,84}=\dfrac{0,64}{0,24};\dfrac{0,24}{0,64}=\dfrac{0,84}{1,61};\dfrac{1,61}{0,64}=\dfrac{0,84}{0,24}\)
6 . 63 = 9 . 42
=>6/9 = 42/63
6/42 = 9/63
63/9 = 42/6
63/42 = 9/6
0,24 . 1,61 = 0,84 . 0,64
=> 0,24/0,84 = 0,64/1,61
0,24/0,64 = 0,84/1,61
1,61/0,84 = 0,64/0,24
1,61/0,64 = 0,84/0,24
a)6/9=42/63;9/6=63/42;63/9=42/6;9/63=6/42