Số dư của phép chia 26 345 : 35 là:
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Đáp án A
Phép chia có số dư bằng thương nên số dư là 5.
Gọi x là số chia cần tìm. Ta có:
số bị chia = số chia x thương + số dư
Số chia của phép chia đó là: (345 − 5) : 5 = 68

Số dư lớn nhất khi chia cho 71 là 70. Số bị chia là
71x35+70=2555

Từ đề bài ta có được các đẳng thức sau
x=24.r1+5
x=26.r2+5
r1-r2=2=>r1=r2+2
thay vào biểu thức đầu ta được
x=24.(r2+2)+5=24r2+48+5=24r2+53
=>2r2-48=0
r2=24
x=24.24+5=581

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\(\left(dư25\right)\)
(dư 25) nhé