lunes, 21 de septiembre de 2009

cuarta tarea 1-5 algebra

1)-6(5)+25x=(147/15)x=-248/43-223/105=5+25x=(147/15)x-248/43-223/105=30x=9.8x-5.7-2.1=30x=2=x=30/2=15

2)(6.4)/(7.6)+28x=13+(0.2)(2.0)=0.8+28x=13+0.4=x=28.8/13.4=2.1

3)9.6+(0.6)x=165+345=10.2x=2002=x10.2/2002=x=5.09

4)-10(-7)(-8)(9)+257896-1247-5x=951753+456=-5040+256644x=951753+456=251604x= 9517531456=x=251604/9517531456=x=2.6

5)1.6+1.3=2x=2.9=2x=2.9/2=x 1.45=x

6)(0.8)(0.3)+3x=4-3.4=0.24+3x=0.6=3.24x=0.6=x=3.24/0.6=x=5.4

7)7.6+1.7x=23x-12=9.3x=11x=11/9.3=x=1.1=x

8)12x-18+3.2=72.5-4x=-2.8x=68.5x=68.5/2.8=x=-24.4

9)((7)(1.6)/(5))=5.6+3.25x=(11.2/5)=8.85x=2.24=8.85x=2.24/8.85=x=0.25=x

10)-22-178+6.6-16x=147+15.5x=-200+6.6-16x=162.5x=-173.4-16x=162.5x=-209.4x=162.5x=
-209.4/162.5=-1.2=x

11)951357-456258+1.3x=145x-654852+123987=495099+1.3x=-654707x+123987=495100.3x
=-530720x=495100.3/-530720=-0.9=x