Toán Lớp 7: rúi gọn biểu thức
1/xy-x
2/3a-6x+9y
3/5x10y-15z
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Toán Lớp 7: rúi gọn biểu thức
1/xy-x
2/3a-6x+9y
3/5x10y-15z
Comments ( 2 )
2/ 3a – 6x + 9y = 3(a – 2x + 3y)
3/ 5x10y – 15z = 5(10xy – 3z)