Răspunsuri

2014-08-19T20:47:29+03:00
A/2+a/4=165   aducem la acelasi numitor

2a+a=660

3a=660

a=660/3

a=220
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2014-08-19T20:48:01+03:00
X/2 + x/4 = 165 , se aduce la un acelasi numitor [4]
2x+x= 660
3x=660
x=660:3
x=220

1 5 1