What is the answer to 28=-6u-12+2u ?

The answer to 28=-6u-12+2u is u=-10

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28=-6u-12+2u

28 = - 6 u - 12 + 2 u

u = - 10

Solution steps

28 = - 6 u - 12 + 2 u

Switch sides

- 6 u - 12 + 2 u = 28

Group like terms

- 6 u + 2 u - 12 = 28

Add similar elements:

- 6 u + 2 u = - 4 u

- 4 u - 12 = 28

Move

12

to the right side

- 4 u = 40

Divide both sides by

- 4

u = - 10

x^{2} - 23 x + 42

- 2 x^{2} - 3 x + 12 = 0

(x - 4)^{2} = - 4

3 x^{2} - 4 x < 2 x^{2} + 21

\frac{240 - 80 x}{3} \cdot 0.22 = \frac{80 x}{3} \cdot 0.21