What is the answer to -8x-15+9x-1=-21 ?

The answer to -8x-15+9x-1=-21 is x=-5

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-8x-15+9x-1=-21

- 8 x - 15 + 9 x - 1 = - 21

x = - 5

Solution steps

- 8 x - 15 + 9 x - 1 = - 21

Group like terms

- 8 x + 9 x - 15 - 1 = - 21

Add similar elements:

- 8 x + 9 x = x

x - 15 - 1 = - 21

Subtract the numbers:

- 15 - 1 = - 16

x - 16 = - 21

Move

16

to the right side

x = - 5

x + 3 (x + 2) = 18

3 (3 x - 2) - 7 x = 6 (2 x - 1) - 10 x

4 x - 3 = - 2 x + 9

x, x^{2} - y^{2} = (x + y) (x - y)

\frac{x - 8}{5} + 3 = 6