12x + 9x + 7z = ...klo ad kta "***mit" lngsung di warn ._

12x + 9x + 7z = …klo ad kta “***mit” lngsung di warn ._

Penjelasan dengan langkah-langkah:

12x + 9x + 7z

= (12 + 9)x + 7z

= 21x + 7z

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SOAL :

1) 12X + 9X + 7Z

= [ 12 + 9 ]X + 7Z

= 21X + 7Z