How many solutions does this system have?

x + 2y - 3z = 4

- 2x - 4y + 62 = - 8

3x + 6y - 92 = 12

O There is no solution.

o There are an infinite number of solutions.

O There is one solution.

o There are three solutions.

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18/30 reduce into fraction

P = a + b + c; P = 28, a = 5, b = 11 (Perimeter of a triangle)

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How to substitution math work

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