Hola! :3
Resolvemos:
(-3/4)(2/9) ÷ (4/9)(-3/7)
(-3 × 2)/(4 × 9) ÷ (4 × -3)/(9 × 7)
-6/36 ÷ -12/63
-1/6 ÷ -4/21
-1/6 × -21/4
(-1 × -21)/(6 × 4)
+21/24
+7/8
Espero haberte ayudado :D
Atte: Jean07122006
