Question

Who to solve this eq 10 x +18÷x-180÷x-x=63

Answer 1

$10x + 18 \div x - 180 \div x - x = 63$

$10 \times {x}^{2} + 18 - 180 - x {}^{2} = 63x$

$10x { }^{2} - 162 - x {}^{2} = 63x$

$9x {}^{2} - 63x - 162 = 0$

$9(x {}^{2} - 7x - 18) = 0$

$x { }^{2} - 9x + 2x - 18 = 0$

$x(x - 9) + 2(x - 9) = 0$

$(x - 9)(x + 2) = 0$

if

$x - 9 = 0$

$x = 9$