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Mathematics, 06.10.2019 10:00 swagluxry

What is the solution to the system of equations? use the substitution method.
y-3x=7
21+9x=3y
a. there is no solution
b. there are an infinite number solutions
c. the solution is {1,10}
d. the solution is {28,0}

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What is the solution to the system of equations? use the substitution method.
y-3x=7
21...
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