How To: Use applications of rational expressions in algebra

Use applications of rational expressions in algebra

Lawrence Perez, from Saddleback College, and his assistant Charlie, give this beginning-algebra lesson on word problems (or applications) with equations of rational expressions. If you like math, and you like English, than what's the problem?

Want to master Microsoft Excel and take your work-from-home job prospects to the next level? Jump-start your career with our Premium A-to-Z Microsoft Excel Training Bundle from the new Gadget Hacks Shop and get lifetime access to more than 40 hours of Basic to Advanced instruction on functions, formula, tools, and more.

Buy Now (97% off) >

Our Best Phone Hacks

Gadget Hacks' tips — delivered daily.

1 Comment

I need help with my home work, is 1 am and still dont get it, please please help me with Simplifying rational expressions?

1) 5/2x
3) x/x-8

5) 3/15x-20

Problem 7.2,
3) 1+2/9

9) x^2+9x+14/x+7*x/x+2

37) 15/x/3/2x

Problem 7.3,
1) 7x/13+2x/13

3) 8x/15+x/15

55) 3-x/x-7-2x-5/7-x

Problem 7.4
1) 7/15x^2+13/24x

3) 8/15x^2+5/6x^5


5) 4/x-3+7/x+1




Problem 7.5, (1; 5; 14)
1) 1/2+1/4/1/2+1/3

5) 2/5-1/3/2/3-3/4

14) 1/y-3/4/1/y+2/3

Problem 7.6, (1; 7; 8)

1)x/3=x/2-2

7) 2/x+1/3=4/x

8) 5/x+1/3=6/x


Problem 7.7, (37; 40; 49)

37) What is proportion? Give an example with your description.

40) What are corresponding angels in similar triangle?

49) Ben can prepare a company report in 42 hours. How long will take them working together to prepare four company reports?

Problem 7.8 (1; 3; 17)
1) y varies directly as x. y=65 when x=5 find y when x = 12.

3. y varies inversely as x. y=12 when x=5, find y when x=2.

17. A varies jointly as z and the sum of y and x.

Share Your Thoughts

  • Hot
  • Latest