Toán Lớp 6: bài 1 Tính
a) ( 9^7 :9^5 -1 ) + 324 :3^9
bài 2 :tìm x biết
a) 120 : [41 -(x-5)] =2³ .5
b)1442 -2x = 2 ^4 × 3 ^4
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Toán Lớp 6: bài 1 Tính
a) ( 9^7 :9^5 -1 ) + 324 :3^9
bài 2 :tìm x biết
a) 120 : [41 -(x-5)] =2³ .5
b)1442 -2x = 2 ^4 × 3 ^4
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