Soluciones matemáticas de sexto grado.
3/5:x=1/3:2 x=3.6
3:8=15:x x=40
x:9=4:3 x=12
1/4:1/8 = x:1/10 x = 1/5
1.25:0.25=x:1.6 x=8
3/4: x=3:12 x=3
5:8=40:x x=64
x:3/4=1/5:2/5 x=3/8
140:2=x:5 x=350
6.5:x=3.25:4 x=8X:20=0.4:6
6X=20* 0.4
X=4/3
45:9=x:3
32:4=X:8
38: 60=x:30
25:40=x:60
11:50=x:100
18:25=x:75
85:1664=x:6124
14%:X=4.75:57/8