Question

1203-(281+x)=256

5.(2022-2x)=0

x.x=9

Answer 1

1203-(281+x)=256

<=> 281 + x = 947

<=> x = 947 - 281

<=> x = 666

5.(2022-2x)=0

<=> 2022 -2x = 0

<=> 2x = 2022

<=> x = 1011

x.x=9

<=> x² = 3² = (-3)²

<=> x = 3 hoặc -3

Answer 2

a: =>x+281=947

=>x=666

b: =>2022-2x=0

=>x=1011

c: =>x^2=9

=>x=3 hoặc x=-3