Question

A rectangular picture is 3cm longer than its width, (x+3). A frame 1 cm wide is placed around the picture. The area of the frame alone is 42 cm^2. Find the length of the picture _______cm.

_________________
________ !
! ! !
! ! !
! !x+6 !
! ! !
! ! !
!_______! !
x+3 !
_________________!

**(try my best to draw a pic frame***



diagram is mess up =(

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