Toán Lớp 7: 1/7 * 1/3+1/7 * 1/2-1/7 plz halp!!
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Toán Lớp 7: 1/7 * 1/3+1/7 * 1/2-1/7 plz halp!!
Comments ( 2 )
= 1/7 . (1/3 + 1/2 – 1)
= 1/7 . -1/6
= -1/42