720 : [(5 - 2x) - (-41)] = 23 . 5
720 : [(5 - 2x) + 41] = 8 . 5
720 : [(5 - 2x) + 41] = 40
(5 - 2x) + 41 = 720 : 40
(5 - 2x) + 41 = 18
5 - 2x = 18 - 41
5 - 2x = -23
2x = 5 - (-23) = 5 + 23
2x = 28
x = 28 : 2 = 14
=> x = 14
Các câu hỏi tương tự
720:41-(2x-5)=23*5
720:[41-(2x-5)]=23.5
720:[41-(2x-5)]=23.5
tìm x biết 720 : [ 41- (2x -5) ] = 2^3 .5
( 720:[41-(2x-5)]=23.5
720:[41-(2x-5)]=23 x 5
(2x-4).(3-x) 720 : [ 41-(2x-5)]=22.5 15-x=7-(-2)
720 : [ 41 - ( 2x - 5 ) = 2^2 . 5
tim x
720:[41-(2x-5)]=23.5