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2x + 5y = 2 x3. 6x + 15y = 6
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-19y = -38
y = 2
2x + 5y = 2
2x + 10 = 2
2x = -8
x = -4
5x + 3y = 5.(-4) + 3(2)
= -20 + 6 = -14