64 . x - 13 . x - x = 43

x . (64 - 13 - 1 ) = 43

x . 50 = 43

x = 43 : 50

x = \(\frac{43}{50}.\)

\(5\left(x-1\right)+3=43\)

\(5\left(x-1\right)=40\)

\(x-1=8\)

\(x=9\)

\(\left(1+2+3+...+50\right)+x=5050\)

\(\dfrac{50\left(50+1\right)}{2}+x=5050\)

\(1275+x=5050\)

\(x=3775\)

\(\left(2x+1\right)^3=64\)

\(\left(2x+1\right)^3=4^3\)

\(2x+1=4\)

\(2x=3\)

\(x=1,5\)

     43 x 27 + 93 x 43 + 57 x 61 + 59 x 57 

  = 43 x ( 27 + 93 ) + 57 x ( 61 + 59 )

  =  43 x 120 +  57 x 120

  = 120 x ( 43 + 57 )

   = 120 x 100

  = 1200

b) 64 x 6 + 81 x 4 + 17 x 6 

 = 6 x ( 64 + 17 ) + 81 x 4 

 =  6 x 81 + 81 x 4 

 = 81 x ( 6 + 4 ) 

 = 81 x 10 

 = 810

A) =43 x (27+93)+57*(61+59)

=43*120+57*120

=120*(43+57)

=120*100

=12000

a. 64 x 25 + 35 x 25 + 25

= 64 x 25 + 35 x 25 + 25 x 1

= 25 x ( 64 + 35 + 1 )

= 25 x 100 

= 2500

b. 58 x 42 + 32 x 8 + 5 x 16

c. ( 42 x 43 + 57 x 43 + 43 ) - 360 : 4

= 42 x 43 + 57 x 43 + 43 x 1 - 90

= 43 x ( 42 + 57 +1 ) - 90

= 43 x 100 - 90

= 4300 - 90

= 4210

d. 456 : 2 x 181456 : 3 - 102

Trả lời:

a,\(64\times25+35\times25+25\)

\(=25\times\left(64+35+1\right)\)

\(=25\times100\)

\(=2500\)

b,\(58\times42+32\times8+5\times16\)

\(=2436+256+80\)

\(=2772\)

c,\(\left(42\times43+57\times43+43\right)-360\div4\)

\(=43\times\left(42+57+1\right)-90\)

\(=43\times100-90\)

\(=4300-90\)

\(=4210\)

d,\(456\div2\times181456\div3-102\)

\(=228\div3\times181456-102\)

\(=76\times181456-102\)

\(=13790656-102\)

\(=13790554\)

a,64 x 25 + 35 x 25 +25

=25x(64+35+1)

=25x100

=250

b, 58 x 42 +32 x 8 +5 x 16

=2772

c,(42 x 43 +57 x 43+43 )-360:4

=43x(42+57+1) - 360 :4

= 43 x 100 -90

=4300-90

=4210

d,456:2 x 181456:3 -102

=228x181456:3-102

=13790656-102

=13790554

a)64x25+35x25+25=25x(64+35)+25=25x99+25=2475+25=2500

mình trả lời ý a

64 x 25 +35 x 25 +25 x 1

= 25 x ( 64 + 35 + 1 )
= 25 x 100

= 2500

Tính nhanh:

a) 64 x 25 + 35 x 25 + 25 

= 64 x 25 + 35 x 25 + 25 x 1

= 25 x ( 64 + 35 + 1 )

= 25 x 100

= 2500

  b) 58 x 42 + 32 x 8 + 5 x 16

= 

các bn giúp mik nhanh với ạ

64 x y - y x 13 -y = 43

y x (64-13-1)=43

y x 50 =43 

y=43:50

y=43/50

bbbbbbbbbb

64-(127-43)= x-(53-64)

=> 64-84= x- (-11)

=> -20 = x- (-11)

=> (-20)+(-11)=x

=> -31=x

=> x=-31

64- (127- 43) = x-(53-64)

64 - 127+43=x-53+64

64 -127+43+53-64=x

-31 = x

Vậy số nguyên x cần tìm là -31

\(x\cdot194-x\cdot93-x\cdot1=1200\) 

\(x\left(194-3-1\right)=1200\) 

\(100x=1200\) 

\(x=12\)

    x * 194 - x* 94 - x = 1200

     x* 194 - x*93 - x *1 = 1200

   x* ( 194 - 93 -1 ) = 1200

x * 100 = 1200 

x= 1200 : 100 

x= 12

\(\Leftrightarrow194x-93x-x=1200\)

\(\Leftrightarrow\left(194-93-1\right)x=1200\)

\(\Leftrightarrow100x=1200\)

\(\Leftrightarrow x=12.\)