Răspuns:
AB=154cm
CD=75cm
EF=69cm
GH=88cm
Explicație pas cu pas:
AB=100cm + 10x + 6y
Dam factor comun pe 2 intre utlimii doi termeni
AB= 100cm+ 2×(5x+3y)
AB= 100cm+ 2×27cm = 154 cm
4cm+ 2x + 7y = 15cm
2x+7y=15cm-4cm=11cm
CD=20cm +5×(2x+7y)=20cm + 5×11cm=75cm
EF=3×(x+5y)=3×23cm=69cm
GH=12x-8y=4×(3x-2y)
3x-2y=18cm+4cm=22cm
GH=4×22cm=88cm