Question

Scuze am gresit de fapt era asa...Determinati pe x.y.z.u.din egalitatile..a) 500m+1000cm+x=1km b)1/2kg+420g+y=1kg c)12m+100cm+z=2000dm d)1/2kg+30mm+u=150mm

Answer 1

a) 500m=50000 cm , 1km= 100000 cm rezulta 50000cm+1000cm+x=100000cm, x=100000-1000-50000 cm, x=99000-50000 cm, x=49000cm
b) 1/2kg=1/2 din 1000g=1000/2g=500 g, 1kg=1000g rezulta 500g+420g+y=1000g, y=1000-420-500 g, y=580-500, y=80g
c)12m=1200cm, 2000dm=20000cm rezulta 1200cm+100cm+z=20000cm,
z=20000-1200-100 cm z=1800-100cm z=1700 cm
d)1/2km(nu poti calcula km cu kg ori sunt km sau dincolo sunt mg si nu mm) 1/2km=1/2 x 1000000mm=500000mm
500000mm+30mm+u=150mm imposibil u da negativ!