Toán Lớp 6: a. X (2-1) + 3^5 = 7^4
b. X +1^9 + 2^5 = 5^3
c. 9^12 (2X-1) = 9^13 : 9^12
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Toán Lớp 6: a. X (2-1) + 3^5 = 7^4
b. X +1^9 + 2^5 = 5^3
c. 9^12 (2X-1) = 9^13 : 9^12
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