What is the answer to -81=6u-13u-18 ?

The answer to -81=6u-13u-18 is u=9

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-81=6u-13u-18

- 81 = 6 u - 13 u - 18

u = 9

Solution steps

- 81 = 6 u - 13 u - 18

Switch sides

6 u - 13 u - 18 = - 81

Add similar elements:

6 u - 13 u = - 7 u

- 7 u - 18 = - 81

Move

18

to the right side

- 7 u = - 63

Divide both sides by

- 7

u = 9

12 x + 20

- 1.4 m = 2.1

3 2^{\frac{3}{5}}

- 4 a^{2} - 28 a + 40 = 0

\frac{5 ^{8}}{5 ^{4}}