<PRE><B>Question 15536</B>
OK Problem 1)
We have to derive an equation:Perimeter of rectangle is
2 x width+2 x length
If we have width = x
The length will be 7x-2
So our equation will be:
2x+2(7x-2)=60 Multiply expression in bracket by 2
2x+14x-4=60 Rearrange to get:
16x=64 Divide both sides by 16
x=4cm which is the width
Length is (7x4)-2=26

Problem 2)
Again need to derive an equation:
Let second side=x 
so first side=x-8 and
third=4(x-8).So our equation will be:
x-8+x+4(x-8)=26 get rid of brackets by multiplying by the 4
x-8+x+4x-32=26
6x-40=26 Add 40 to both sides
6x=66
x=11  So 1st side=3m,2nd side=11m and 3rd=12m
hope this helps
Pete</PRE>