b) 12/35 , comprobacion 12/35 x 5/4 = 3/7
c) [tex]\frac{\frac{4}{3} }{\frac{7}{10} } = \frac{4}{3} :\frac{7}{10}[/tex] = 40/21, comprobacion 40/21 x 7/10 = 4/3
d) [tex]\frac{\frac{7}{10} }{\frac{4}{3} } = \frac{7}{10}: \frac{4}{3}[/tex] = 21/40, comprobacion 21/40 x 4/3 = 7/10
II.
[tex]15 =\frac{5}{2} X a[/tex]
[tex]\frac{2}{5} X 15 = \frac{2}{5} X \frac{5}{2}a[/tex]
[tex]2 X 3=\frac{1}{5} X 5a[/tex]
2 x 3 = a
6 = a
El lado a = 6
Comprobamos
15 = [tex]\frac{5}{2} X 6[/tex]
15 = 5 X 3
15 = 15
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Verified answer
b) 12/35 , comprobacion 12/35 x 5/4 = 3/7
c) [tex]\frac{\frac{4}{3} }{\frac{7}{10} } = \frac{4}{3} :\frac{7}{10}[/tex] = 40/21, comprobacion 40/21 x 7/10 = 4/3
d) [tex]\frac{\frac{7}{10} }{\frac{4}{3} } = \frac{7}{10}: \frac{4}{3}[/tex] = 21/40, comprobacion 21/40 x 4/3 = 7/10
II.
[tex]15 =\frac{5}{2} X a[/tex]
[tex]\frac{2}{5} X 15 = \frac{2}{5} X \frac{5}{2}a[/tex]
[tex]2 X 3=\frac{1}{5} X 5a[/tex]
2 x 3 = a
6 = a
El lado a = 6
Comprobamos
15 = [tex]\frac{5}{2} X 6[/tex]
15 = 5 X 3
15 = 15