What is the answer to 7u+9-10u=-18 ?

The answer to 7u+9-10u=-18 is u=9

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7u+9-10u=-18

7 u + 9 - 10 u = - 18

u = 9

Solution steps

7 u + 9 - 10 u = - 18

Group like terms

7 u - 10 u + 9 = - 18

Add similar elements:

7 u - 10 u = - 3 u

- 3 u + 9 = - 18

Move

9

to the right side

- 3 u = - 27

Divide both sides by

- 3

u = 9

\frac{1}{7} x = 3

- 5.4 - 7.8 x = - 78.408

4 x - 8 = 32

x, 2 y + 3 x - 6 = 0

8 x + 2 - 5 x = 2 x - 7 + 4 x