use substitution to solve the system

label Algebra
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use substitution for the system

-3x+4y=19

x=3y-8

Oct 19th, 2017

-3x+4y=19

x=3y-8

-3(3y-8)+4y=19

-9y+24+4y=19

-5y=-5

y=1

x=3*1-8=-5

x=-5   y=1

Jun 7th, 2015

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