Decide whether you would use the graphing, substitution, or elimination method to solve the following system of equations. Explain, in complete sentences, why you chose that method.
Part 2: Solve the following system of equations and show all of your work.

2x + 5y = −3
−15x − 5y = −10

Question

Decide whether you would use the graphing, substitution, or elimination method to solve the following system of equations. Explain, in complete sentences, why you chose that method.
Part 2: Solve the following system of equations and show all of your work.

   2x + 5y = −3
−15x − 5y = −10

anonymous · Answer

i would use elimination because if you add the equations the $y$ term drops out in one step

thesecret20111 · Answer

I would use  elimination as look at the terms in each equation, adding them together would cancel out y. This would make solving for x easy. Once you have x you could then solve for y.

anonymous · Answer

Can you help me solve for it please?

anonymous · Answer

add

thesecret20111 · Answer

Ok so as I said add both equations together.. What would this give you?

anonymous · Answer

$$ 2x + 5y = −3$$$$ −15x − 5y = −10
$$

anonymous · Answer

i.e. add in columns

thesecret20111 · Answer

So add the 2x with the -15x and the +5x with the -5y and the -3 with the -10

anonymous · Answer

2x+5y=-3
-15x-5y=-10 Cross out the y's.
2x-15x=-10
13x=-10-3
13x=-13
Divide by 13
x=1

2(1)+5y=-3
2+5y=-3
-2   -2
5y=-5
Divide by 5
y=-1

(1,-1)

anonymous · Answer

your answer is right but your method has a flaw

anonymous · Answer

you should have in line 3 
$$-13x=-13$$ so $x=1$

anonymous · Answer

Thank you.

anonymous · Answer

yw