Resposta:
A)[tex]\frac{X}{3} =\frac{10}{6} =\\[/tex] multiplica cruzado
6.x=3.10
6x=30
x=[tex]\frac{30}{6}[/tex]
x=5
B)[tex]\frac{x}{4} =\frac{91}{52}[/tex]= multiplica cruzado
52.x=4.91
52x=364
x=[tex]\frac{364}{52}[/tex]
x=7
c)[tex]\frac{x}{4} =\frac{18}{21}[/tex]
21.x=18.7
21x=126
x= [tex]\frac{126}{21}[/tex]
x=6
d)[tex]\frac{x}{105} \frac{2}{30}[/tex]= multiplica cruzado
30.x=105.2
30x=210
x=[tex]\frac{210}{30}[/tex]
x=7
e)[tex]\frac{x}{8} =\frac{36}{32}[/tex]= multiplica cruzado
32.x=8.36
32x=288
x=[tex]\frac{288}{32}[/tex]
x=9
f)[tex]\frac{x}{3}= \frac{128}{48}[/tex]= multiplica cruzado
48.x=3.128
48x=384
x=[tex]\frac{348}{48}[/tex]
x=8
