What is the answer to (d+5)/3 =(d-1)/9 ?

The answer to (d+5)/3 =(d-1)/9 is d=-8

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(d+5)/3 =(d-1)/9

\frac{d + 5}{3} = \frac{d - 1}{9}

d = - 8

Solution steps

\frac{d + 5}{3} = \frac{d - 1}{9}

Apply fraction cross multiply: if

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

then

a \cdot d = b \cdot c

(d + 5) \cdot 9 = 3 (d - 1)

Expand

(d + 5) \cdot 9 : 9 d + 45

Expand

3 (d - 1) : 3 d - 3

9 d + 45 = 3 d - 3

Move

45

to the right side

9 d = 3 d - 48

Move

3 d

to the left side

6 d = - 48

Divide both sides by

6

d = - 8

1 - \frac{1}{5} \times \frac{1}{5} \times \frac{1}{5}

1 x^{2} + 4 x + 2 = 0

7 (- 2) - 4 (6) = - 5

k^{2} + 2 k + 1

0.1 (30) + 8 - 12 (\frac{1}{4})