Question

39+(201+18)=(39+201)+what

Answer 1

heya !!

here is your answer.

Given:
39+(201+18)=(39+201)+what
Replace what with x.

39+(201+18)=(39+201) + x
Using associative property, where
(a+b) +c = a + (b+c)

So, x = 18

Hope You Got It

Answer 2

WE KNOW x+(y+z)=(x+y)+z here x=39 y =201,and z=18 so 39+(201+18)=(39+201)+18 so your answer is 18