algebra

[alyssat]

can't figure out the steps and solution to 1.8x - 5 = 4.3x - 7.75 help please!!!

 

[BigGlenntheHeavy]

$\displaystyle Isolate \ x \ and \ then \ solve.$

$\displaystyle Just \ remember, \ an \ equation \ is \ like \ a \ balance, \ if \ you \ take \ away \ something \ from$

$\displaystyle one \ side, \ you \ must \ take \ the \ same \ "something" \ away \ from \ the \ other \ side \ to \ keep$

$\displaystyle the \ "scales" \ balance. \ The \ only \ exception \ is \ you \ can \ multiply \ one \ side \ of \ the \ balance$

$\displaystyle by \ one \ and \ leave \ the \ other \ side \ alone, \ since \ you \ haven't \ change \ anything.$

$\displaystyle 5 \ = \ 5, \ (5)(1) \ = \ 5.$

 

[Denis]

can't figure out the steps and solution to 1.8x - 5 = 4.3x - 7.75 help please!!!

Always a good idea to get rid of decimals; multiply by 100:
180x - 500 = 430x - 775 ; follow that?
Get the x's together:
430x - 180x = 775 - 500 ; can you finish it?

 

[alyssat]

Thanks Denis for your help!!

alyssat

 

[pypannell]

2x=11 sketch the graph

 

[pypannell]

y=5x-10 sketch the graph

 

[maria0916]

need help on my homework

 

[mmm4444bot]

2x=11 sketch the graph

The graph is a vertical line.

Solve for x, to find the intercept.

In the future, please use the [NEWTPOIC] button on the index page, to start your own thread.

 

[mmm4444bot]

y=5x-10 sketch the graph

Plot the y-intercept at (0, -10).

Draw a line with slope 5/1, through this point.

Please read the post titled, "Read Before Posting".

 

[mmm4444bot]

need help on my homework

Please use the [NEWTOPIC] button on the index page, to start your own thread.

Read the post titled, "Read Before Posting". It explains how to ask for help, on these boards.