Question

Determine o termo que falta para que as frações sejam equivalentes.
A) 3/8=?/96
B) 7/12=98/?
C)12/63=?/21
D) 9/8 = ?/272

Answer 1

$a)\\ \\ \frac{3}{8} =\frac{?}{96} \\ \\ 96:8=12\\ \\ 12~.~3=36\\ \\ \frac{3}{8} =\frac{36}{96}$

$b)\\ \\ \frac{7}{12} =\frac{98}{?} \\ \\ 98:7=14\\ \\ 14~.~12=168\\ \\ \frac{7}{12} =\frac{98}{168}$

$c)\\ \\ \frac{12}{63} =\frac{?}{21} \\ \\ 63:21=3\\ \\ 12:3=4\\ \\ \frac{12}{63} =\frac{4}{21}$

$d)\\ \\ \frac{9}{8} =\frac{?}{272} \\ \\ 272:8=34\\ \\ 9~.~34=306\\ \\ \frac{9}{8} =\frac{306}{272}$