32+53=?
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![](https://rs.olm.vn/images/avt/0.png?1311)
32 . 53 - 31 = 53.(31 + 1) - 31 = 53.31 < 53.31 + 32
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có : A = 32 . 53 - 31 = (31 + 1) . 53 - 31 = 31 . 53 + 53 -31 = 53 . 31 +22
Vì 22 < 32 Nên : 53 . 31 + 22 < 53 . 21 +32
Hay : A < B
Vậy A < B .
Ta có: A = 32 . 53 - 31
A = ( 31 + 1 ) . 53 - 31
A = 31 . 53 + 53 - 31
A= 31 . 53 + 22
Vì 31 . 53 + 22 < 53 . 31 + 32 nên A < B
Vậy A < B
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có: \(\dfrac{11}{53}+\left(\dfrac{32}{47}+\dfrac{-10}{53}\right)+\dfrac{-64}{94}+\dfrac{1}{-53}+\dfrac{1}{3}\)
\(=\dfrac{11}{53}+\dfrac{32}{47}-\dfrac{10}{53}-\dfrac{32}{47}-\dfrac{1}{53}+\dfrac{1}{3}\)
\(=\dfrac{1}{3}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có:A=32 x 53-31
=31 x 53+53-31
=31 x 53+22<31 x 53 +32=B
Vậy A<B
![](https://rs.olm.vn/images/avt/0.png?1311)
mình nhầm
=64:32+8 nhân 125 -4 nhân 9
=2+1000-36
=966
like nhé
![](https://rs.olm.vn/images/avt/0.png?1311)
=64:32+8x125-4x9
=2+1000-36
=1002-36
=966
(đúng thì cho xin 1 like)
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có: A = 32 x 53 - 31 = 31 x 53 + 53 - 31 = 31 x 53 + 22
Do 22 < 32 => 31 x 53 + 22 < 53 x 31 + 32
=> 52 x 53 - 31 < 53 x 31 + 32
=> A < B
\(A=32\times53-31\)
\(\Leftrightarrow A=\left(31+1\right)\times53-31\)
\(\Leftrightarrow A=31\times53+53-31\)
\(\Leftrightarrow A=31\times53+22\)
Vì 22 < 32 nên 31 x 53 + 22 < 53 x 31 + 32 hay A < B
~ Hok tốt ~
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 32 x 53 -21 / 53 x 31 + 32
= (31+1)x 53 -21/ 53 x 31+32
=31x53 + 53 x 1/ 53 x31 +32
=31 x 53 +53/ 53 x 31 +32
=53/32
k cho mình nha
32 x 53 -21 / 53 x 31 + 32
= ( 31 + 1 ) x 53 - 21 / 53 x 31 + 32
= 31 x 53 + 53 x 1 / 53 x 31 + 32
= 31 x 53 + 53 / 53 x 31 +32
= 53 / 32
Xong !
![](https://rs.olm.vn/images/avt/0.png?1311)
c, 3.25.8 + 4.37.6 + 2.38.12
= (3.8).25 + (4.6).37 + (2.12).38
= 24.25 + 24.37 + 24.38
= 24.(25 + 37 + 38)
= 24.100
= 2400
d, (1200 + 60):12
= 1200: 12 + 60: 12
= 100 + 5
= 105
\(3^2+5^3=9+125=134\)
32+53= 3x3 +5x5x5=9 +125= 134