# Solving a system of linear equations using substitution

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### Question Description

Use substitution to solve system

x -2y= -8

-2x +5y +21

y =

x =

Athul K
School: New York University

hello

x -2y= -8

-2x +5y = 21   ( i hope the second equation is like this ,if there is any changes please message)

x-2y = -8

x= 2y-8

substitute this value of x, x= 2y-8 in -2x +5y = 21

-2 ( 2y-8 )+5y =21

-4y +16 +5y =21

y = 21-16

substitute y=5  in x -2y= -8

x - 2*5=-8

x = -8 +10

y=5

x=2

hope you understood..please message if you have any doubts...thank you

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Anonymous
awesome work thanks

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