Sunday

April 20, 2014

April 20, 2014

Posted by **Shannon** on Saturday, September 18, 2010 at 9:04pm.

0.3x-0.2y=4

0.4x+0.5y= -29/19 (fraction)??

Please Help I do not understand Algebra!!

- algebra -
**Ted**, Saturday, September 18, 2010 at 9:32pmto solve this equation by elimination method, you need to make sure that the number in each one of the equation is the same.

you have to pick a no that will fit.

4x0.3x-0.2y=4

3x0.4x+0.5y=-29/19

1.2x-0.8y=16

1.2x+1.5y=87/19

you then cross out the no that is the same and what you have let is:

-0.8y=16

+1.5y=87/19

then you subtract the remaining equation, so it will be:

-0.8y-(+1.5y)=2.3y

16-87/19

the answer you get will be divided by 2.3y and that is how you get the value of y

after you get the value of y, you substitute the value of y into one of the equation that was not multiplied by any no, which is the original equation, then you get the value of x .and yeah that's all. i hope this was helpful

- algebra -
**Anonymous**, Monday, October 11, 2010 at 9:13am4x-8=6

**Related Questions**

algebra - Solve by the elimination method 0.3x-0.2y=4 0.4x+0.5y= - 55/17 Thank ...

Algebra - Solving system of linear equations by using the apropiate method name ...

Algebra 2 - maximize p=6x+10y minimize p=14x+9y use elimination to solve: 4x+5y=...

math - Solve by elimination method. 0.3x – 0.2y = 4 0.5x + 0.5y = 85/19

algebra - Hoe can I solve this by using elimination method.?? 5y+2x=5x+1 3x-2y=...

Algebra - How do I solve for elimination method on this problem: 0.3x - 0.2y=4 ...

mat116 - Can you please look over these and let me know if they are right? 1/4(...

mat116 - Can you please look over these and let me know if they are right? 1/4(...

Algebra help/ look over please - Can you please look over these and let me know ...

colege algebra - Solve the system by the elimination method 5x+5y=-7 7x-2y=13 ...