Respostas

2013-12-13T22:50:15-02:00
2x+2y=144
y=1x/5

2x+2.1x/5=144
2x+2x/5=144          mmc de 1,5 = 5
10x/5+2x/5=720
10x+2x=720
12x=720
x=720/12
x=60

2x+2y=144
2.60+2y=144
120+2y=144
2y=144-120
2y=24
y=24/2
y=12

Logo o comprimento mede 60 m e a largura mede 12 m.
2013-12-13T22:51:59-02:00
Largura : x/5
Comprimento : x
Perimetro : 2x/5 + 2x = 144
2x + 10x = 144*5
12x = 144*5
x = 60
Largura : 12 cm
Comprimento : 60