Solve the system of linear equations below
x + y = 4
2x + 3y = 0

Question

Solve the system of linear equations below
 x  +   y  =  4
 2x  +  3y  =  0

anonymous · Answer

First solve for $x$ in terms of one of the other variables. The first one is easier to do this.
$$x = 4 - y$$
Then you can plug that into the second: $$2(4 - y) + 3y = 0$$
After you've found y, you can substitute that back in and find x.

campbell_st · Answer

multiply the 1st equation by 2

then subtract the 2nd equation, this will eliminate x and allow you to solve for y

    2x + 2y = 8
-  2x  + 3y = 0
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anonymous · Answer

so then you what would be the answer?o:

campbell_st · Answer

well what do you get when you do the subtraction... 

when you have a value for y, substitute it into either equation to find x