October 2018 1 64 Report
CARA DAN JAWABAN !

Tentukan nilai b jika diketahui persamaan linear dan penyelesaiannya :
a. 9x + by = 1 dengan penyelesaian (1,2)
b. (b + 1)x + 7y = -8 dengan penyelesaian (2,-2)
c. 2x - by = -10 dengan penyelesaian (b,4)
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