Resposta :
Resposta:
A) 2/3=4/x
2x=4.3
2x=12
x=12/2
6
B) 1/2=x/3
2x=3.1
x=3/2
1,5
C) x/5=1/2
2x=5.1
x=5/2
2,5
D) 3/x=5/7
5x=3.7
5x=21
x=21/5
4,2
Resposta:
A) 2/3=4/x
2x=4.3
2x=12
x=12/2
6
B) 1/2=x/3
2x=3.1
x=3/2
1,5
C) x/5=1/2
2x=5.1
x=5/2
2,5
D) 3/x=5/7
5x=3.7
5x=21
x=21/5
4,2