Răspunsuri

2014-09-17T19:05:47+03:00
4x+12-7X=10-5x+17
4x-7x+5x=10+17-12
-3x+5x=27-12
2x=15 => x=15/2
2014-09-17T19:05:47+03:00
4(x+3)-7x=5(2-x)+17
4x+12-7x= 10-5x+17
12-3x= 27-5x
-3x+5x= 27-12
2x= 15
⇒ x= 15/2= 7,5 
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