How do you solve the system of equations #4x + 3y = 3# and #x - y = - 8#?

1 Answer
Alex N.
May 2, 2017

#x=-3 and y=5#

Explanation:

#4x+3y=3#
#x-y=-8#
Multiply the second line by 3 to get rid of y.
#4x+3y = 3#
#3x-3y=-24#
Add the two equations to get rid of y.
#7x=-21#
Now solve for x.
#(7x)/7=(-21)/7#
#x=-3#
Now sub x into one of the equations and solve for y.
#4*-3+3y=3#
#3y=15#
#(3y)/3=15/3#
#y=5#
(-3,5)

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