1 < 2

3 > 1 

3 < 4

3 = 3

5 > 2

5 > 4

2 < 3

1 < 5

4 > 1

4 = 4

4 > 3

5 = 5

2 < 3

3 < 5

1 < 4

3 > 1

Ta có: 35=1(mod 17)

=>35³⁵=1³⁵(mod 17)

=>35³⁵=1 (mod 17)

Ta có: 52=1(mod 17)

=>52⁵² = 1⁵²(mod 17)

=>52⁵²=1(mod 17)

=>35³⁵+52⁵²-2=1+1-2 (mod 17)

=>A=0 (mod 17)

=>A chia hết cho 17 (đpcm)

1. \(-\dfrac{52}{17}+\left(\dfrac{12}{19}+\dfrac{52}{17}\right)=\left[\left(-\dfrac{52}{17}\right)+\left(-\dfrac{52}{17}\right)\right]+\dfrac{12}{19}=\dfrac{12}{19}\)

2. \(\dfrac{21}{35}+\left(-1+\dfrac{14}{35}\right)=\dfrac{3}{5}+\left(-1+\dfrac{2}{5}\right)=\left(\dfrac{3}{5}+\dfrac{2}{5}\right)+\left(-1\right)=1-1=0\)

1. \(\frac{-52}{17}+\left(\frac{12}{19}+\frac{52}{17}\right)=\frac{-52}{17}+\frac{12}{19}+\frac{52}{17}\)\(=\left(\frac{-52}{17}+\frac{52}{17}\right)+\frac{12}{19}=\frac{0}{17}+\frac{12}{19}=\frac{12}{19}\)

2. \(\frac{21}{35}+\left(-1+\frac{14}{35}\right)=\frac{21}{35}-1+\frac{14}{35}=\left(\frac{21}{35}+\frac{14}{35}\right)-1=1-1=0\)

a) -( -35 + 7 - 13 ) + ( 2 - 35 ) - ( 13 - 7 )

= 35 - 7 + 13 + 2 - 35 - 13 + 7

= ( 35 - 35 ) + ( -7 + 7 ) + ( 13 - 13 ) + 2

= 0 + 0 + 0 + 2

= 2

b) ( 70 + 8 - 35 ) - ( 8 - 37 - 10 ) - 70 

= 70 + 8 - 35 - 8 + 37 + 10 - 70

= ( 70 - 70 ) + ( 8 - 8 ) + ( -35 + 37 ) + 10

= 0 + 0 + 2 + 10

= 12 

c) 5 - ( 14 + 4 - 52 ) - ( 52 - 14 ) + 4

= 5 - 14 - 4 + 52 - 52 + 14 + 4

= 5 - ( 14 + 14 ) + ( 52 - 52 ) + ( -14 + 14 )

= 5 - 14 - 14 + 0 + 0

= 5 - ( 14 - 14 )

= 5 - 0

= 5

kinh day ban oi

52 = 37

7 = 5 + 2 

3 = 5 - 2

41 = 4 + 1 = 5

4 - 1 = 3

35 = 28

5 + 3= 8

5 - 3 = 2

25 = x

2+ 5 = 7

5 - 2 = 3 

x  = 37

52 + 35 = 87 

= 87

tk nha

52+35=87

tk mk nha

chúc bn hok giỏi!

\(52-\left(35-x\right)=100\)
\(35-x=-48\)
\(x=83\)

Lớp 5 đã học số nguyên rồi à?

52-(35-x)=100

      35-x  =52-100

      35-x  =( -48)

           x  =(-48) + 35

           x  = (-13)

=100:{2.[52-27]}

=100:{2.25}

=100:50

=2

100:{2.[52-(35-8)]}

=100:{2.[52-27]} 

=100:{2.25}

=100:50

=2