Question

If two sides of a triangle are 3x - 2y + 5 and 4x - 3 + y and its perimeter is 12x - 3y - 7 ,find its third side.



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Answer 1

Answer:

the third side is 5x-2y-9

Step-by-step explanation:

let third side=Z

second side=3x-2y+5

first side=4x-3+y

perimeter=12x-3y-7

Z+3x-2y+5+4x-3+y=12x-3y-7

z+7x+2-y=12x-3y-7

z+7x+2=12x-3y-7+y

z+7x=12x-2y-7-2

z+7x=12x-2y-9

z=12x-2y-7x-9

z=5x-2y-9

therefore the third side =5x-2y-9

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Answer 2

Answer:

ans 5x-2y-9

Step-by-step explanation:

let third side=Z

second side=3x-2y+5

first side=4x-3+y

perimeter=12x-3y-7

Z+3x-2y+5+4x-3+y=12x-3y-7

z+7x+2-y=12x-3y-7

z+7x+2=12x-3y-7+y

z+7x=12x-2y-7-2

z+7x=12x-2y-9

z=12x-2y-7x-9

z=5x-2y-9

therefore the third side =5x-2y-9

I hope this is helpful to you then please mark me as brainlest