(x-106)*8=1087*8

Cùng chia cho 8 ta có :

x - 106 = 1087

=> x = 1087 + 106

=> x = 1193

(x - 106) x 8 = 1087 x 8

x -106 = 1087

x = 1087 + 106 

x=1193

\(2x+\dfrac{7}{99}.\dfrac{8}{15}=\dfrac{106}{99}.\dfrac{8}{15}\)

=> \(2x+\dfrac{8}{15}.\dfrac{7}{99}-\dfrac{8}{15}.\dfrac{106}{99}=0\)

=> \(2x+\dfrac{8}{15}\left(\dfrac{7}{99}-\dfrac{106}{99}\right)=0\)

=> \(2x+\dfrac{8}{15}.\left(-1\right)=0\)

=> \(2x-\dfrac{8}{15}=0\)

=> \(2x=\dfrac{8}{15}\)

=> \(x=\dfrac{8}{15}:2=\dfrac{4}{15}\)

106 − x = − 58 – 8 106 − x = − 66 − x = − 66 − 106 − x = − 172       x = 172.

a)  x – 32 = − 5 − 17 ⇔ x – 32 = − 32 ⇔ x = − 32 + 32 ⇔ x = 0.

b)  16 – x = 21 – − 8 ⇔ 16 – x = 21 + 8 ⇔ 16 − x = 30 ⇔ − x = 30 − 16 ⇔ − x = 14 ⇔ x = − 14.

c)  106 − x = − 58 – 8 ⇔ 106 − x = − 66 ⇔ − x = − 66 − 106 ⇔ − x = − 172 ⇔ x = 172.

25+3*(x-8)=106

\(\Rightarrow\)3*x-3*8=106-25

\(\Rightarrow\)3*x-24=81

\(\Rightarrow\)3*x=81-24

\(\Rightarrow\)3*x=57

\(\Rightarrow\)x=57:3

\(\Rightarrow\)x=19

25 + 3*(x-8) = 106

3*(x-8) = 106 - 25 = 81

x - 8 = 81 : 3 = 27

x =  27 + 8

x = 35

25 + 3 * ( x - 8 ) = 106 

3 * ( x - 8 ) = 106 - 25 

3 * ( x - 8 ) = 81 

x - 8 = 81 : 3 

x - 8 = 27 

x = 27 + 8 

x = 35 

\(25+3(x-8)=106\)

\(25+3x-24=106\)

\(1+3x=106\)

\(3x=105\)

\(x=35\)

3.(x-8) = 106-25

3.(x-8) = 81

x-8 = 81:3

x-8 = 27

x=35

\(25+3\left(x-8\right)=106\)

\(\Rightarrow3\left(x-8\right)=81\Rightarrow x-8=27\)

\(\Rightarrow x=35\)

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