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4x + y = -1
2x + 3y = 17
nilai 15x + y =
Pembahasan
4x + y = -1 l 1x l => 4x + y = -1
2x + 3y = 17 l 2x l => 4x + 6y = 34
......................... -
-5y = -35
y = 7 maka x = 4x + (7) = -1
x = -8 / 4 = -2
nilai 15x + y = 15 (-2) + 7 = -23
Semoga membantu :) D
2x + 3y = 17 | 4 | 8x + 12 y = 68
-10 y = -70
y = 7
4x + y = -1
4x + 7 = -1
x = -2
15x + y
15(-2) + 7
-23