8x + 72 = 24 + 80
8x + 72 = 104
8x = 104 - 72
8x = 32
x = 32 : 8
x = 4
8x + 72 = 24 + 80
8x + 72 = 104
8x = 104 - 72
8x = 32
x = 4
8x + 72 = 24 + 80
8x = 24 + 80 - 72
8x = 32
x =32 : 8
x = 4
8 x + 72 = 24 + 80
8 x + 72 = 104
8 x = 104 - 72
8 x = 32
x = 32 : 8
x = 4
tk nha mơn nhìu
8x+72=104
8x=104-72
8x=32
x=32:8
x=4