Question

Rút gọn biểu thức:M=(71+x)-(-24-x)+(-35-x)

 

Answer 1

M = (71+ x) - (-24 - x) + (-35 - x)

= 71 + x + 24 + x - 35 - x

= (x + x - x) + (71 + 24 - 35)

= x + 60

Answer 2

M = ( 71 + x ) - ( - 24 - x ) + ( - 35 - x )

   = 71 + x + 24 + x - 35 - x

  = ( x + x - x ) + ( 71 + 24 - 35 )

  = x + 60