May 2021 0 5 Report
Langkah 1. Misalkan bilangan I = x bilangan Il = y
Langkah 2
► x + y
x + y = (lihat kalimat pertama di soal)
y=... -x (pindahkan x ke ruas kanan)
x.y = ....
(dari kalimat kedua di soal)
Ambil persamaan kedua:
x.y=75
(ganti y dengan 20 - x)
(kalikan pelangi)
*. (20 - x) = 75

bantuin dong ✌​

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