Question 549676
x longest
y third side

z = smallest side
perimeter = 90


x=z+20
z=x-20.................(1)
x=y+10
y=x-10.................(2)

x+y+z=92
x+x-10+x-20=90
3x-30=90
3x=120

x= 40 in the longest side
y=x-10=30 in
z=x-20=20in

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