Question

I am a triangle.my length is x cm and breath is y cm .
(Equation 1) 2x+2y=..........
(Equation 2) ...................
1 equation my perimeter is 90 cm.
2 equation my length is 3cm less than the breath.
write the equation is the form ax+by=c.
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Answer 1

triangle is not have length and breadth

if it is a rectangle

(equation 1) 2x+2y=90

(equation2) -x + y= 3