Problem

What value of $x$ makes this equation true?
$\frac{4}{7} = - \frac{8}{x}$

Answer

Expert–verified

Hide Steps

Answer

$x = - 14$

Steps

Step 1 ：Cross-multiply the equation: $4 x = - 8 \times 7$

Step 2 ：Simplify the equation: $4 x = - 56$

Step 3 ：Solve for x: $x = \frac{- 56}{4}$

Step 4 ： $x = - 14$

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