x+12=23
x =23-12
x =11
34-x=32
x=34-32
x=2
x-56=45
x =45+56
x =101
x + 12=23
x = 23 - 12
x = 11
34 - x = 32
x = 34 - 32
x = 2
x - 56 = 45
x = 45 + 56
x = 101
1) \(x+12=23\)
\(\Rightarrow x=23-12\)
\(\Rightarrow x=11\)
2) \(34-x=32\)
\(\Rightarrow x=34-32\)
\(\Rightarrow x=2\)
3) \(x-56=45\)
\(\Rightarrow x=45+56\)
\(\Rightarrow x=101\)
x + 12 = 23 34 - x = 32 x - 56 = 45
x = 23 - 12 x = 34 - 32 x = 45 + 56
x = 11 x = 2 x = 101
x + 12 = 23 34 - x = 32 x - 56 = 45
x = 23 - 12 x = 34 - 32 x = 45 + 56
x = 11 x = 2 x = 101
Ai k mình k lại
x+12=23. 34—x=32
x=23—12. x=34—32
x=11. x=2
x—56=45
x=45+56
x=101
o0o Kurogane ikki2 o0o
a, x + 12 = 23
x = 23 - 12
x = 11
b, 34 - x = 32
x = 34 - 32
x = 2
c, x - 56 = 45
x = 45 + 56
x = 101
o0o Kurogane ikki2 o0o mk k ban rui
x + 12 = 23
x = 23 - 12
x = 11
34 - x = 32
x = 34 - 32
x = 2
x - 56 = 45
x = 56 + 45
x = 101
* x+12=23
x =23-12
x =11
vậy x=11
* 34 - x = 32
x = 34-32
x = 2
vậy x = 2
* x - 56 =45
x =45 +56
x = 101
vậy x = 101