=> 53-x= 105 -61=44

=> x=53-44=9

a)[(x+32)+17] :2=42

(x+32)+17=42.2

(x+32)+17=84

x+32=84-17

x+32=67

x=67-32

x=35

b)[61+(53-x)]:17=1785

61+(53-x)=1785.17

61+(53-x)=10345

53-x=30345-61

53-x=30284

x=53-30284

x=-30231

a) => (x+32) - 17 = 42:2 = 21

=> x+32 = 21+17 = 38

=> x=38-32=6

b) => 61+(53-x) = 1785:17=105

=> 53-x = 105-61=44

=> x = 53-44 =9

c) => x^2 +54 -32 = 244:2 = 122

=> x^2 +22 = 122

=> x^2 = 122-2=100

=> x= 10 hoặc -10

giải oy pn **** giùm mk nka

a. X = 6

b. X = 9

c. X = 10

Cau a các bạn đã làm mình làm câu b , c nhé

420  + 65 x 24 = (x+175) : 5 +30

1980 = (x+175) : 5 + 30

(x+175):5 = 1950

x+175 = 390

x = 215

7 x X - 24 = 5x X

=> 7 x X - 5 x X = 24

2x = 24

=> x = 12               

[61+(53-x)].17=1785
[61+(53-x)]=1785:17=105
61+(53-x)=105
53-x=105-61
53-x=44
x=44+55
x=99
vay x=99

[61+(53-x)].17=1785

=>[61+(53-x)]=1785:17

=>114 -x=105

=>x=114-105

=>x=9

\(\left[61+\left(53-x\right)\right].17=1785\)

\(\Rightarrow\left[61+\left(53-x\right)\right]=1785:17\)

\(\Rightarrow\left[61+\left(53-x\right)\right]=105\)

\(\Rightarrow53-x=105-61\)

\(\Rightarrow53-x=44\)

\(\Rightarrow x=53-44\)

Vậy \(x=9\)

[(x + 32) - 17] . 2 = 42

(x + 32) - 17 = 42 : 2

(x + 32) - 17 = 21

x + 32 = 21 + 17 

x + 32 = 38

x = 38 - 32

x = 6

Vậy x = 6

a) [ (x + 32 ) - 17 ] * 2 = 42

[ (x + 32 ) - 17 ] = 42 : 2

 (x + 32 ) - 17  = 21

 (x + 32 )  = 21 + 17 

 x + 32     = 38

x = 38 - 32

x = 6