Toán Lớp 6: Tìm x biết:
a) x + 257 = 981 b) x – 546 = 35
c) 721 – x = 615 d) 58 + 7x = 100 e) 101 + (36 – 4x) =105 f) 4(x + 41) = 400 g) 2x – 49 = 5.32 h) 2(x – 51) = 2.23 + 20
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Toán Lớp 6: Tìm x biết:
a) x + 257 = 981 b) x – 546 = 35
c) 721 – x = 615 d) 58 + 7x = 100 e) 101 + (36 – 4x) =105 f) 4(x + 41) = 400 g) 2x – 49 = 5.32 h) 2(x – 51) = 2.23 + 20
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