Số lớn là:
( 50 + 10 ) : 2 = 30
Đáp số :..........
số lớn là
(50 + 10) : 2 =30
Đ/S: 30
Bài giải:
Số lớn là:
(50 - 10) :2 = 20
Đáp số : 20
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