How do you solve x-2y=-25 and 3x-y=0?

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Answer 1 · 2018-07-19T05:10:02

#x=5# and #y=15#

As #3x-y=0#, we have #y=3x#

hence #x-2y=-25# becomes

#x-2*3x=-25#

or #x-6x=-25#

or #-5x=-25#

i.e. #x=(-25)/(-5)=25/5=5#

and #y=3*5=15#