What is the answer to 2y-3(2y-3)+2=31 ?

The answer to 2y-3(2y-3)+2=31 is y=-5

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2y-3(2y-3)+2=31

2 y - 3 (2 y - 3) + 2 = 31

y = - 5

Solution steps

2 y - 3 (2 y - 3) + 2 = 31

Move

2

to the right side

2 y - 3 (2 y - 3) = 29

Expand

- 3 (2 y - 3) : - 6 y + 9

2 y - 6 y + 9 = 29

Add similar elements:

2 y - 6 y = - 4 y

- 4 y + 9 = 29

Move

9

to the right side

- 4 y = 20

Divide both sides by

- 4

y = - 5

(2 x - y + 1)^{2} - (x - y - 2)^{2}

z^{2} - 7 z - 18

(2 x + 8) (x - 5) = 0

∣ 2 x - 1 ∣ = 6

4 (3 x - 6) = 24