PLEASE HELP ME

solve the following system of equations by linear combinations:

3x + 2y = -7
5x - 4y = -19

A. there is no solution
B. the solution is ( -4, 2 )
C. the solution is ( -3,1 )
D. there are an infinite number of solution

Question

PLEASE HELP ME



solve the following system of equations by linear combinations:

3x + 2y = -7
5x - 4y = -19

A. there is no solution
B. the solution is ( -4, 2 )
C. the solution is ( -3,1 )
D. there are an infinite number of solution

misty1212 · Answer

Hi again

misty1212 · Answer

multiply the top by two and add 
$$6x+4y=-14\
5x-4y=-19$$ adds to 
$$11x=-33$$

misty1212 · Answer

that makes $x=-3$ only one choice of course you can always cheat http://www.wolframalpha.com/input/?i=3x+%2B+2y+%3D+-7%2C+5x+-+4y+%3D+-19

anonymous · Answer

so C

anonymous · Answer

@misty1212

misty1212 · Answer

yeah C $\color\magenta\heartsuit$

anonymous · Answer

thank you so much !

misty1212 · Answer

$\color\magenta\heartsuit$
$\color\magenta\heartsuit$