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Solve the system of equations using the substitution method.

{4x+5y=7y=3x+9

Enter your answers in the boxes.

x=

y=

2 answers
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Bot

Bot answered
1 year ago

x = -2

y = 5

oobleck

oobleck answered
1 year ago

AAAaannndd the bot gets it wrong yet again!

4x+5y=7
y=3x+9
so, substituting,
4x+5(3x+9) = 7
19x = -38
x = -2
so y = 3

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