a) (x + 74) - 318 = 200
x + 74 = 200 + 318
x + 74 = 518
x = 518 - 74
x = 444
b) 3636 : (12x - 91) = 36
12x - 91 = 3636 : 36
12x - 91 = 101
12x = 101 + 91
12x = 192
x = 192 : 12
x = 16
c) (x : 23 + 45) . 67 = 8911
x : 23 + 45 = 8911 : 67
x : 23 + 45 = 133
x : 23 = 133 - 45
x : 23 = 88
x = 88 . 23
x = 2024
a. ( x + 74 ) - 318 = 200
x + 74 = 518
x = 444
a, (x + 74 ) - 318 = 200
x + 74 = 200 + 318
x + 74 = 518
x = 518 - 74
x=444
b,3636 : ( 12x - 91 ) = 36
12x - 91 = 3636 : 36
12x - 91 = 101
12x = 101 + 91
12x = 192
x = 16
c, ( x : 23 + 45 ) . 67 = 8911
x : 23 + 45 = 8911 . 67
x : 23 + 45 = 597037
x : 23 = 596992
x = 13730816
a. ( x + 74 ) - 318 = 200
x + 74 = 200 + 318
x + 74 = 518
x = 518 - 74
x = 444
b. 3636 : ( 12x - 91 ) = 36
12x - 91 = 3636 : 36
12x - 91 = 101
12x = 101 + 91
12x = 192
x = 192 : 12
x = 16
c. ( x : 23 + 45 ) . 67 = 8911
x : 23 + 45 = 8911 : 67
x : 23 + 45 = 133
x : 23 = 133 - 45
x : 23 = 128
x = 128 . 23
x = 384
tk mk đi mà, cảm ơn nhiều nhiều và ăn tết vui vẻ nha!!! ^^
a,\(\left(x+74\right)-318=200\)
\(x+74=200+318\)
\(x+74=518\)
\(x=518-74\)
\(x=444\)
b,\(3636:\left(12x-91\right)=36\)
\(12x-91=3636:36\)
\(12x-91=101\)
\(12x=101+91\)
\(12x=192\)
\(x=192:12\)
\(x=16\)
c,\(\left(x:23+45\right).67=8911\)
\(x:23+45=8911:67\)
\(x:23+45=133\)
\(x:23=133-45\)
\(x:23=88\)
\(x=88.23\)
\(x=2024\)