a) (x + 73) - 26 = 76
=> (x+73) = 102
=> x = 102 - 73
=> x = 29
b) 6x - 36= 144 : 2
=> 6x - 36 = 72
=> 6x = 72 + 36
=> 6x = 108
=> x = 18
c) 32 . (x + 4) - 52 = 5 . 22
=> 32 . (x + 4) = 45
=> x + 4 = 45 : 9
=> x + 4 = 5
=> x = 1
a) (x+73) - 26 =76
(x+73) = 76+26
(x+73) =102
x =102-73
x =29
b)6x -36=144 :2
6x -36 =72
6x =72+36
6x =108
x =108:6
x =18
c)32.(x+4)-52=5.22
9.(x+4)-25 =5.4
9.(x+4) -25 =20
9.(x+4) =20+25
9.(x+4) =45
x+4 =45:9
x+4 =5
x =5-4
x =1
tick hộ nhé!