Toán Lớp 7: Tính:
a, 17×65+35×17+17×67+17×3-17×70
b, 16,25×45+45,75×45+45×38
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Toán Lớp 7: Tính:
a, 17×65+35×17+17×67+17×3-17×70
b, 16,25×45+45,75×45+45×38
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