Răspunsuri

2014-11-10T17:11:04+02:00
1) 2x+7=43+x/-x X+7=43 x=43-7 x= 36 2) 84:(x-3)=12 x-3=84:12 x-3=7 x=10 3) 3×(4+5x)=72 La 3) nu inteleg...care este necunoscuta. Te rog mai scrie o data enunul.
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2014-11-10T17:14:18+02:00
2) 84:(x-3)=12 X-3=84:12 X-3=7 1). 2x+7=43+x 2X=43-7+x 2x=36+x X=36 3).