Question #807dd

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Answer 1 · 2017-05-31T14:09:26

#y=0#

#x=4#

We can make the #y# have a coefficient of 10.

These are the new equations:

#10x -10y = 40#

#-15x-10y = -60#

Since they have the same sign, -10y, -10y, you subtract the equations from each other.

#25x = 100#
#x = 4#

Sub the #x# value back into one of the original equations to find #y#.

#20 - 5y = 20#

#y=0#