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3x + 4y = 14 kali 2 = 6x + 8y = 28 -
- 5y = -25
y = 5
2x + y = 1
2x + 5 = 1
2x = -4
x = -2
maka hp (-2,5)
b. 5x - y= 8 kali 3 = 15x - 3y = 24
2x + 3y =-7 kali 1 = 2x + 3y = -7 +
17x = 17
x = 1
2x + 3y = 8
2(1) + 3y = 8
3y = 6
y = 2
maka hp ( 1,2)