How do you solve the system of equations #4x - 3y - 1= 0# and #4x + 7y - 11= 0#?

1 Answer
G_Ozdilek
Jul 26, 2017

Multiply the second equation by -1. Your x and y has the same value (1).

Explanation:

#4x-3y = 1#
#-4x-7y=-11#

Combine these equations, yielding
#-10y=-10#

Therefore, y is 1. #y=1#

Now you can find x by inserting y value in any original equation:

#4x - 3=1# (for example the first equation)

#4x=4#
#x=1#

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