Question

3x+y=13 / x-3y+9=0
SOLVE BY SUBSTITUTION METHOD

Answer 1

Answer:

∞ HERE IS UR ANSWER Ω

3x+y=>13--»(1)

x-3y=9--»(2)→×by3

3x-9y=27--»(2)

subtract(2)&(1)

3x+y=13

3x-9y=27→change signs

(-) (+) (-)

\_________/

0+10y=40

♠ y=40

10

y=4→(3)

put (3)in (1)

3x+4=13

3x=13-4

3x=9

→x=9

3

°•°x= 3

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Answer 2

Answer:

hope you this understand that