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spuneti va rog rezolvarile la aceste ecuatii?
5(y-2)+3=38
7+2(14+y)=15 va multumesc


Răspuns :

5(y-2)+3=38
5y-10+3=38
5y-7=38
5y=38+7
5y=45
y=45/5
y=9

7+2(14+y)=15
7+28+2y=15
35+2y=15
2y=15-35
2y=-20
y=-20/2
y=-10
5y-10+3=38«=»5y=51«=»y=51/5 7+28+2y=15«=»2y=-20«=»y=-20/2«=»y=-10