4 2 3x )=- 7x 10 July 8, 2019 16 32 64 128 10x 2 3x 4 )= 7x 22 3x 4 17x 3 9x 2 7x 10 2 3x 4 ) 8x 10 7x 2 4 3x 2 )- 3 x 4 )= 7x 10 2 x 3 )+ 3x 4 )= 7x 10 ตรวจ คํา ตอบ
