The sum of three numbers is 8, twice the second number when added to the first number gives 7 - Maths -

Question

The sum of three numbers is 8, twice the second number
when added to the first number gives 7 On adding the twice of the
sum of First and second numbers to the thrice of the third numbers,
we get 20 Find the number using matrix method using elementary row
transformations

Sanjari Kalantri · Accepted Answer

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The sum of three numbers is 8, twice the second number when added to the first number gives 7. On adding the twice of the sum of First and second numbers to the thrice of the third numbers, we get 20. Find the number using matrix method using elementary row transformations.