Respuesta :

cromulent

Triangles have [tex]180^{\circ}[/tex] in total, so the sum of all the angles should be [tex]180^{\circ}[/tex]

First triangle

[tex]180 = 90 + (x + 5) + (2x - 2)\\180 = 90 + x + 5 + 2x - 2\\180 - 90 - 5 + 2 = x + 2x\\87 = 3x\\x = 29^{\circ}[/tex]

Second triangle

[tex]180 = (x + 40) + (2x - 5) + (3x - 17)\\180 = x + 40 + 2x - 5 + 3x - 17\\180 - 40 + 5 + 17 = x + 2x + 3x\\162 = 6x\\x = 27^{\circ}[/tex]

Answer:

The first one is 7 I think

Step-by-step explanation:

x+5=2x-2

subtract x from both sides.

5=x-2

add two to both sides and that is 7

Second one is -14 I think

x+40+3x-17=2x-5

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

x+40+3*x-17-(2*x-5)=0

Pull out like factors :

2x + 28  =   2 • (x + 14)

Solve  :    x+14 = 0  

Subtract  14  from both sides of the equation :  

                     x = -14

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