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Tổng hai số là: 1000 x 2 = 2000
Số thứ nhất : (2000 + 640) : 2 = 1320
Số thứ nhất : 2000 - 1320 = 680
Tổng 2 số là :
1000 x 2 = 2000
Số thứ nhất là :
( 2000 + 640 ) : 2 = 1320
Số thứ hai là :
2000 - 1320 = 680
Đ/s : Số thứ 1 : 1320
Số thứ 2 : 680
Tk mk nha !!!
tong 2 so la: 262x2= 524
so1 la:(524 + 226) :2 =375
so2 la :524 - 375= 149
Tổng của hai số là
262x2=524
Số thứ hai là
(524-226):2=149
Số thứ nhất là
(524+226):2=375
Đáp số.......
Nếu giảm số thứ hai đi 468 đvị thì được số thứ nhất => Số thứ hai hơn số thứ nhất 468 đvị
Tổng hai số là
1000x2=2000
Số thứ nhất là
(2000-468):2=766
Số thứ hai là
(2000+468):2=1234
Đáp số.........
Số thứ hai là:
\(2000\cdot\dfrac{3}{5}=1200\)
Số thứ nhất là
2000-1200=800
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Gọi số thứ nhất, hai , ba theo thứ tự đề bài là a, b và c.
Theo đề bài, ta có (a+b+c):3 = 126 ; a - b = 15 suy ra a = b+15 ; b - c =9 suy ra c = b - 9
Do đó \(\frac{a+b+c}{3}=126\Rightarrow b+15+b+b-9=378\Rightarrow3b=372\Rightarrow b=124\Rightarrow c=124-9=115\)
Vậy số thứ ba là 115
Tổng hai số là: 1000 x 2 = 2000
Số thứ nhất : (2000 + 640) : 2 = 1320
Số thứ hai : 2000 - 1320 = 680
Số thứ nhất 1320
Số thứ hai 680