Răspuns:
Explicație pas cu pas:
2x + 2 - 3y + 3 = 1
2x - 3y + 5 = 1
2x - 3y = 1 - 5
2x - 3y = -4
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5x - 10 - 4y + 12 = 1
5x - 4y + 2 = 1
5x - 4y = 1 - 2
5x - 4y = -1
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2x - 3y = -4
5x - 4y = -1
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10x - 15y = -20
-10x + 8y = 2
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-7y = -18
y = 18/7
2x = -4 + 3y = -4 + 3*18/7 = -28/7 + 54/7 = 26/7
x = 26/7 : 2 = 13/7