What is the answer to 8x+(x-9)=180 ?

The answer to 8x+(x-9)=180 is x=21

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8x+(x-9)=180

8 x + (x - 9) = 180

x = 21

Solution steps

8 x + (x - 9) = 180

Remove parentheses:

(a) = a

8 x + x - 9 = 180

Add similar elements:

8 x + x = 9 x

9 x - 9 = 180

Move

9

to the right side

9 x = 189

Divide both sides by

9

x = 21

\frac{7 π}{6} \cdot \frac{180}{π}

x^{3} - 121 x

3 a^{2} + 7 a - 20

3 (x - 5) \geq 6

- 3 \leq \frac{x + 4}{- 2} < 16