Question

Tìm x

Answer 1

2: =>3x-16=8

=>3x=24

=>x=8

3: =>5x-9=1

=>5x=10

=>x=2

4: =>6x-1=17

=>6x=18

=>x=3

6: =>2x-9=7

=>2x=16

=>x=8

7: =>4x-8=4

=>4x=12

=>x=3

9: =>7x-8=13

=>7x=21

=>x=3

10: =>9x-16=11

=>9x=27

=>x=3

Answer 2

\(3x-4^2=8\\ 3x-16=8\\ 3x=8+16\\ =3x=24\\ x=\dfrac{24}{3}=8\\ ---\\ 2x-3^2=7\\ 2x-9=7\\ 2x=7+9\\ 2x=16\\ x=\dfrac{16}{2}\\ x=8\\ ----\\ 7x-2^3=13\\ 7x-8=13\\ 7x=13+8\\ 7x=21\\ x=\dfrac{21}{7}=3\\ ---\\ 5x-3^2=1\\ 5x-9=1\\ 5x=1+9\\ 5x=10\\ x=\dfrac{10}{5}=2\\ ---\\ 4x-2^3=4\\ 4x-8=4\\ 4x=4+8\\ 4x=12\\ x=\dfrac{12}{4}=3\\ ---\\ 9x-4^2=11\\ 9x-16=11\\ 9x=11+16\\ 9x=27\\ x=\dfrac{27}{9}=3\\ ---\\ 6x-1^7=17\\ 6x-1=17\\ 6x=17+1\\ 6x=18\\ x=\dfrac{18}{6}=3\)