Question

=equality

$a + b + c = ( 1 \div {a}^{2} + {b }^{2} - {c}^{2} ) + (1 \div { {b}^{2} + {c}^{2} } - {a}^{2} ) + (1 \div {c}^{2} + {a}^{2} - {b}^{2} )........$
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Answer 1

Solution refer to the attachment

Answer 2

Refer to attachment......

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$\huge{\underline{\underline{\mathfrak{Thank you}}}}$