What is the answer to (-x)/7 =(8x)/9 ?

The answer to (-x)/7 =(8x)/9 is x=0

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(-x)/7 =(8x)/9

\frac{- x}{7} = \frac{8 x}{9}

x = 0

Solution steps

\frac{- x}{7} = \frac{8 x}{9}

Apply fraction cross multiply: if

\frac{a}{b} = \frac{c}{d}

then

a \cdot d = b \cdot c

(- x) \cdot 9 = 7 \cdot 8 x

Simplify

- 9 x = 56 x

Move

56 x

to the left side

- 65 x = 0

Divide both sides by

- 65

x = 0

50 + 80 + 6 x + 8 = 180

6 x - 3 (x - 1) = 4 + 5 x

3 - \frac{x}{2} = 6

- \frac{x}{5} - 37 = - 18

43 a + 7 = 79