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-2x + 3y = -16 } x3
6x + 8y = 14
-6x - 9y = -48
____________ +
-y = -34
y = 34
x = 6x + 8y = 14
= 6x + 8(34) = 14
= 6x + 272 = 14
= 6x = 14 - 272
= 6x = -258
= x = -258 : 6 = -43
Nilai x dan y = 2x - 7y
= 2(-43) - 7(34)
= -86 - (-238)
= -86 + 238
= 152
Sorry panjang bgt dan sorry juga kalo slh. Itu cara nya uda bnr tp mungkin di atas kyk nya ada salah hitung