a)(3x2)/4=6/4
b)(5x2)/5=10/5
c)(2x7)/10=14/10
d)(7x11)/10=77/10
e)(10x13)/20=130/20
f)(5x20)/15=100/15
g)(2x3x5)/7=30/7
h)(12x10x5)/12=600/12
Sper că te-am ajutat!!