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If 3x + 5y = 9 and 5x + 3y = 7, then find the value of x + y.

+3 votes

asked Feb 9, 2018 in Class 12 by kratos

If 3x + 5y = 9 and 5x + 3y = 7, then find the value of x + y.

algebra
linear programming
class-9
class-10
application of matrices and determinants
linear equations in two variables
class-7
class-12

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1 Answer

+2 votes

answered Feb 27, 2021 by kratos

Best answer

3x + 5y = 9 ... (a)

5x + 3y = 7 ... (b)

equation (a) + (b)

8x + 8y = 16

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