đề :
24 - x = 43 -20
24-x = 23
x= 24 -23
x=1
Ta có:
43 - ( 24-x) =20
=> 24-x=43-20
24-x=23
x=24-23
x=1
Vậy x=1
24 - x =43-20
24 - x =23
x =24-23
x =1
chuk bn hok tốt
43 - (24 - x) = 20
=> 24 - x = 43 - 20
=> 24 - x = 23
=> x = 24 - 23
=> x = 1
Vậy x = 1
\(43-\left(24-x\right)=20\)
\(\Rightarrow24-x=43-20\)
\(\Rightarrow24-x=23\)
\(\Rightarrow x=24-23\)
\(\Rightarrow x=1\)
#Hok tốt