(3x − 24).73 = 2.74

3x − 24 = 2.74 : 73

3x − 24 = 2.74 - 1

3x – 16 = 2.7

3x – 16 = 14

3x = 14 + 16

3x = 30

x = 30 : 3

x = 10

Vậy x = 10

123 - 5(x + 4) = 38

=> 5(x + 4) = 85

=> x + 4 = 17

=> x = 13

vậy_

(3x - 24).73 = 2.7

=> (3x - 24).73 = 14

=> 3x - 24 = 1022

=> 3x = 1046

=> x = 1046/3

\(\left(5x-24\right).73=2.74\)

\(\Leftrightarrow\left(5x-24\right).73=148\)

\(\Leftrightarrow5x-24=\frac{148}{73}\)

\(\Leftrightarrow5x=\frac{148}{73}+24\)

\(\Leftrightarrow5x=\frac{1900}{73}\)

\(\Leftrightarrow x=\frac{1900}{73}.\frac{1}{5}\)

\(\Leftrightarrow x=\frac{380}{73}\)

bạn k làm ra phân số được không

(5.x-24).73=148

5.x-24=148:73

5.x-24=148/73

5.x=148/73+24

5.x=1900/73

x=1900/73:5

x=1900/73.1/5

x=380/73

a: Ta có: \(100-7\left(x-5\right)=58\)

\(\Leftrightarrow7\left(x-5\right)=42\)

\(\Leftrightarrow x-5=6\)

hay x=11

b: Ta có: \(12\left(x-1\right):3=4^3+2^3\)

\(\Leftrightarrow12\left(x-1\right)=216\)

\(\Leftrightarrow x-1=18\)

hay x=19

\(7^5:7^3-x=23\)

\(7^2-x=23\)

\(49-x=23\)

\(x=49-23\)

\(x=26\)

\(\left(2x-7\right).5^8=5^{10}\)

\(\left(2x-7\right)=5^{10}:5^8\)

\(2x-7=5^{10-8}\)

\(2x-7=5^2\)

\(2x-7=25\)

\(2x=32\)

\(x=32:2\)

\(x=16\)

* Mình nghĩ câu a sửa đề như vậy sẽ đúng hơn!

a) x = 12  

b) x= 27              

c) x = 3 

d) x = 2

a) 71 - (33 + x) = 26
             33 + x  = 71 - 26
             33 + x  = 45
                     x  = 45 - 33
                     x  =     12

hieu so phan = nhau la

    5-3=2  

so be la

   73:2x3=109,5

so lon la

     73:2x5=182,5