domingo, 27 de septiembre de 2009

4 tarea de algebra

1.-(5/3)+(4/3)=2x9/3=2x3=2x3/2=x1.5=X

2.- (6/7)(3/9)+3x=4-(17/5)18/63+3x=4-(17/5)0.2+3x=4-3.43x=4-3.4-0.23x=0.4x=0.4/3x=0.13

3.- (23/3)+(16/9)x=23x-127.6+1.7x=23x-127.6+24.7x=-1224.7x=-12-7.624.7x=-19.6x=-19.6/24.7x=-0.7

4.- 12x-18+(23/7)=(145/2)-4x12x-18+3.2=72.5-4x16x-18+3.2=72.516x=72.5+18-3.216x=87.3x=87.3/16x=5.45625

5.- ((14/2)(15/9)/(125/25))=17/3+(13/4)x(210/18)/(125/25)=17/3+3.25x5250/2250=17/3+3.25x2.3=5.6+3.25x2.3-5.6=3.25x-3.3=3.25x-3.3/3.25=x-1.0=x

6.- 22-178+33/5-16x=147+(248/16)x22-178+6.6-16x=147+15.5x22-178+6.6-147=15.5x+16-156+6.6-147 =31.5x-149.4-147=31.5x296.4=31.5x296.4/31.5=x9.40=x

7.- (2)(-3)(5)+25x =(147/15)x-248/43-223/105-30+25x=(147/15)x-248/42-223/105-30+25x=9.8x-5.9-2.1-30+15.2x=-5.9-2.115.2x=-5.9-2.1+3015.2x=22x=22/15.2x=1.447378.- (45/7)/(198/26)+28x=13+(14/67)(222/111)1170/1386+28x=13+3108/14370.8+28x=13+2.128x=13+2.1-0.828x=14.3x=14.3/28x=0.59.- 48/5+(2/3)x=1657+3459.6+0.6x=1657+3450.6x=1657+345-9.60.6x=1992.4x=1992.4/0.6x=332.0666710.- (2)(-5)(-7)(-8)(9)+257896-1247-5x=951753+456-5040+257896-1247-5x=951753+4565x=951753+456+5040-257896+12475x=700600x=700600/5x=140120

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