Răspunsuri

2014-08-01T16:25:26+03:00
X-nr de bomboane ale Mariei

y-nr de bomboane ale Ioanei

y-5=x/4

x-10=y/4

x=y/4+10

y-5=(y/4+10)/4    aducem la acelasi numitor in (....)

y-5= (y+40)/4 /4

y-5=(y+40)/4 * 1/4

y-5=(y+40)/16    aducem la acelasi numitor

16y- 80= y+40

16y-y=40+80

15y=120

y=8

x=8/4 +10= 2=10=12
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