Question

$\sqrt{9x \: \: } \div ( - 4) = - 3$
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Answer 1

$\bold{Hola!}$

$\sqrt{9x} \div(-4)=3$

$\dfrac{-1}{4} x\sqrt{9x} =-3$

$\dfrac{-3}{4} x\sqrt{x} =-3$

$\sqrt{x} =4$

$x=16$

$-3=-3$

$x=16$