What is the answer to 9x-21+8x-3=180 ?

The answer to 9x-21+8x-3=180 is x=12

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9x-21+8x-3=180

9 x - 21 + 8 x - 3 = 180

x = 12

Solution steps

9 x - 21 + 8 x - 3 = 180

Group like terms

9 x + 8 x - 21 - 3 = 180

Add similar elements:

9 x + 8 x = 17 x

17 x - 21 - 3 = 180

Subtract the numbers:

- 21 - 3 = - 24

17 x - 24 = 180

Move

24

to the right side

17 x = 204

Divide both sides by

17

x = 12

y, 5 x - 3 y = 9

3 (x - 4) = 18 + 2 x - 11

- \frac{6}{5} v - \frac{3}{2} = v + \frac{5}{2}

y, 4.2 x - 1.4 y = 2.1

\frac{1}{4} = \frac{x + 1}{4}