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Mathematics 13 Online
OpenStudy (anonymous):

Solve, using the substitution method. y – 3x = 7 21 + 9x = 3y A. There is no solution. B. There are an infinite number of solutions. C. The solution is (1, 10) D. The solution is (28, 0)

OpenStudy (anonymous):

@hero @Philoctetes @***[ISURU]*** @jim_thompson5910 please help me.

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