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2x - y = 5 |x2| 4x - 2y = 10 +
7x = 16
x = 16/7 = 2 2/7
3x + 2y = 6
3(16/7) + 2y = 6
48/7 + 2y = 6
2y = 6 - 48/7
2y = 42/7 - 48/7
2y = 6/7
y = 6/7 :2
y = 6/7 x 1/2
y = 6 / 14
4x - 2y = 10
__________ +
7x = 16
x = 16/7
y = 2(16/7) - 5
= 32/7 - 5
= - 3/7