Question

Resolva os sistema:{5X - Y = 1 \ {2X - 3Y = -10

Answer 1

5x - y = 1 (*-3)
2x - 3y = -10
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-15x + 3y = -3
   2x - 3y = -10
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-13x = -13
x = 13/13
x = 1

2x - 3y = -10
2(1) - 3y = -10
2 - 3y = -10
-3y = -10 - 2
-3y = -12
y = 12/3
y = 4

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