Question

What is the solution of the following system?{3x + 3y = 10−9x − 9y = −30

Answer 1

Infinitely many solutions.

Explanation:

3x+3y=10

-9x-9y=-30

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3(3x+3y)=3(10)

-9x-9y=-30

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9x+9y=30

-9x-9y=-30

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0=0

infinitely many solutions