Question 801118
i am starting substitution but i don't know to do this problem or is it elimination?

4y-x=-24
3x=12y+72
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The problem is not substitution or elimination.
Those are 2 methods you can use to solve any of this type of problem.
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4y-x=-24  --> x = 4y + 24
3x=12y+72 /3 --> x = 4y + 24
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It's the same eqn twice.
Dependent, no unique solution.
Infinite # of solutions.