Question 909363
(3x+4)cm (2x+10)cm (x+12)

option I

(3x+4)cm =(2x+10)cm 

3x-2x=6
x=6

Option II
(3x+4)= (x+12)

3x-x=12-4
2x=8
x=4

Option III

(2x+10)= (x+12)

2x-x=12-10
x=2