How do solve the following linear system?: # x-7y=4 , -2x+5y=-3 #?

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How do solve the following linear system?: # x-7y=4 , -2x+5y=-3 #?

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Answer 1 · 2018-06-05T11:38:37

#x=1/9,y=-5/9#

Explanation:

Multiplying the first equation by #2# and adding to the second:
#-9y=5#
so #y=-5/9#
Plugging this in the first equation
#x-7(-5/9)=4#
#x=4-35/9=(36-35)/9#
so #x=1/9#

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How do solve the following linear system?: # x-7y=4 , -2x+5y=-3 #?

1 Answer

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