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Andrej [43]
3 years ago
11

Solve, using the substitution method.

Mathematics
1 answer:
galben [10]3 years ago
6 0
Y – 3x = 7
y -3x +3x = 7+3x
y = 7+3x

21 + 9x = 3y
21 + 9x = 3(7+3x)
21 + 9x = 21 + 9x

The answer is  B.There are an infinite number of solutions.



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