1)-73

2)-5

3)-64

4)-56

5)9

6)-20

7)6

8)-2

Tick nha

mk ra kết quả thôi nha

đăng tùng câu  một thui bạn 

bạn làm thế chắc tụi mk xỉu gần hết 

a) 16-x=21+8

     16-x=29

          x=16-29

          x=-13

b)x - 32= - 22

   x       = - 22 +32

   x       = 10

a) \(\text{16 - x = 21 - (-8).}\)

<=> \(\text{16 - x = 29.}\)

<=> \(x=-13.\)

Vậy \(x=-13.\)

b) \(\text{x - 32 = (-5) - 17}.\)

<=> \(\text{x - 32 = -22}.\)

<=> \(x=10.\)

Vậy \(x=10.\)

a,30

b,25

c,240

d,-137

e,145

ai giải Đc bài này đầy đủ lời giải sẽ đc tặng card 10k

17 - 25 + 55 - 17 

= ( 17 - 17 ) + ( 25 + 55 )

=     0    +       80 

=   80

( 25 - 75 ) + 32 - ( 32 + 75 )

= 25 - 75  + 32 - 32 - 75 

= 25 + ( 75 - 75 ) + ( 32 - 32 ) 

=   25   +  0 +   0

= 25 

3 câu còn lain tự làm 

a) (135 - 35) . (-37) + 37 . (-42 - 58)

= 100 . 0 . (-100)

= 0

b) -65 . (87 - 17) - 87 . (17 - 65)

= -65 . 70 - 87 . (-48)

= -4550 - 135

= -4415

a) 30

b) 25

c) 240

d) -137

e) 18

a) 17 - 25 + 55 - 17 = (17 - 17) + (55-25)= 0 + 20 = 30

b) 25 - (-75) + 32 - (32 + 75) = 25 + 75 +32 - 32 - 75 = 25 + (75-75)+(32-32) = 25

c) (-5).8.(-2).3= 10.24=240

d) (-15)+(-122)= -137

e) -18.(5 - 6) = -18 .(-1)= 18. 

BYE :3

không đăng câu hỏi linh tinh

d) Ta có: \(32\%-0.25:x=-\dfrac{17}{5}\)

\(\Leftrightarrow0.25:x=\dfrac{8}{25}+\dfrac{17}{5}=\dfrac{93}{25}\)

hay \(x=\dfrac{25}{372}\)

Vậy: \(x=\dfrac{25}{372}\)

e) Ta có: \(\left(x+\dfrac{1}{5}\right)^2+\dfrac{17}{25}=\dfrac{26}{25}\)

\(\Leftrightarrow\left(x+\dfrac{1}{5}\right)^2=\dfrac{9}{25}\)

\(\Leftrightarrow\left[{}\begin{matrix}x+\dfrac{1}{5}=\dfrac{3}{5}\\x+\dfrac{1}{5}=-\dfrac{3}{5}\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=\dfrac{2}{5}\\x=-\dfrac{4}{5}\end{matrix}\right.\)

Vậy: \(x\in\left\{\dfrac{2}{5};-\dfrac{4}{5}\right\}\)

f) Ta có: \(-\dfrac{32}{27}-\left(3x-\dfrac{7}{9}\right)^3=-\dfrac{24}{27}\)

\(\Leftrightarrow\left(3x-\dfrac{7}{9}\right)^3=\dfrac{-8}{27}\)

\(\Leftrightarrow3x-\dfrac{7}{9}=-\dfrac{2}{3}\)

\(\Leftrightarrow3x=\dfrac{1}{9}\)

hay \(x=\dfrac{1}{27}\)

g) Ta có: \(60\%\cdot x+0.4x+x:3=2\)

\(\Leftrightarrow\dfrac{4}{3}x=2\)

hay \(x=\dfrac{3}{2}\)

Vậy: \(x=\dfrac{3}{2}\)

h) PT \(\Leftrightarrow\left|\dfrac{20}{9}-x\right|=\dfrac{2}{9}\) \(\Rightarrow\left[{}\begin{matrix}\dfrac{20}{9}-x=\dfrac{2}{9}\\x-\dfrac{20}{9}=\dfrac{2}{9}\end{matrix}\right.\) \(\Leftrightarrow\left[{}\begin{matrix}x=2\\x=\dfrac{22}{9}\end{matrix}\right.\)

  Vậy ...

i) PT \(\Leftrightarrow\dfrac{8}{5}+\dfrac{2}{5}x=\dfrac{16}{5}\) \(\Leftrightarrow\dfrac{2}{5}x=\dfrac{8}{5}\) \(\Leftrightarrow x=4\)

  Vậy ...

a) 47 + 18 – 26 = 39

b) 3 × 8 : 4 = 24 : 4 = 6

c) 5 × 8 – 32 = 40 – 32 = 8

d) 36 : 4 + 17 = 9 + 17 = 26

minh minh giai cho

(-35)+|-12+(-5)|+(-41)=-35+17-41=-59
(-27)+|17-8|+(+32)=-27+9+32=14

(-35+|(-12)+(-5)|+(-41)=-59

(-27)+|17-8|+(+32)=14

(-35) + |(-12) + (-5)| + (-41)

= (-35) + |-17| + (-41)

= (-35) + 17 + (-41)

= (-18) + (-41)

= -59
(-27) + |17 - 8| + (+32)

= (-27) + |9| + 32

= (-27) + 9 + 32

= (-18) + 32

= 14