# algebra

posted by .

Solve by the elimination method:

0.3x-0.2y=4

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

• algebra -

to 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 -

4x-8=6

## Similar Questions

1. ### Algebra

Solving system of linear equations by using the apropiate method name the method and the x,y coordinates 1)X=4y+8 2x-8y=-3 2)3x-7y=6 elimination method 2x+7y=4 (2,0) 3)5x-2y=12 elimination method 3x-2y=-2 (7,23/2) 4)9x-8y=42 elimination …
2. ### Algebra II

How do you solve the linear equations x+y=5 3x-y=3 by use of the Substitution Method?
3. ### algebra

solve by the elimination method 3x+4y=3 6x+8y=6 help please
4. ### algebra

I need help! Solve by the elimination method: 7r-9s=-12 9r+7s=96 When I do this, I get a crazy fraction, and I know the answer is a point. (r,s) But what I'm getting is ridiculous. I got -564/130=s! That has to be totally wrong!
5. ### algebra

7r-3s=18 3r+7s=16 Solve by the elimination method, please.
6. ### math elimination method

elimination method really confuses me. solve by elimination method 5r -3s = 17 3r + 5s =17 A. solution is ______ (ordered pair, integer or fraction) B. Infinitely many C. No Solution
7. ### Algebra

Solve by elimination method. 7r-3s=14 3r+7s=64 Could never figure out the elimination method. Would love some help with this one. Thanks
8. ### Algebra/Elimination method

Solve using the elimination method. If the system has no solution or an infinite number of solutions, state this. -27x - 18y = -180 9x + 6y = 60