Matemáticas, pregunta formulada por sernadelgadocarmen, hace 1 mes

°porfa es para hoy plis de preferencia por foto con procedimiento porfa plis​

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Respuestas a la pregunta

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Respuestas:

1)

120 + 5x + x = 180

120 + 6x = 180

6x = 180 - 120

6x = 60

x = \frac{60}{6}

x = 10°

2)

100 + 5x + 3x = 180

100 + 8x = 180

8x = 180 - 100

8x = 80

x = \frac{80}{8}

x = 10°

3)

75 + 5x + 30 = 180

105 + 5x = 180

5x = 180 - 105

5x = 75

x = \frac{75}{5}

x = 15°

4)

x+ 30 =60

x = 60 - 30

x = 30

-

y + 40 = 60

y = 60 - 40

y = 20

-

x + y = 30 + 20

x+ y = 50°

5)

30 + 30 + 2x + 40 = 180

100 + 2x = 180

2x = 180 - 100

2x = 80

x = \frac{80}{2}

x = 40°

6)

6x + 15 + 6x + 15 + 90 = 180

12x + 120 = 180

12x = 180 - 120

12x = 60

x = \frac{60}{12}

x = 5°

7)
7x + 8x + 3x = 180

18x = 180

x = \frac{180}{18}

x = 10°

8)

4x + 2x + 90 = 180

6x = 180 - 90

6x = 90

x = \frac{90}{6}

x = 15°

9)

x + x + 10x = 180

12x = 180

x = \frac{180}{12}

x = 15°

10)

5x + 5x + 2x = 180

12x = 180

x = \frac{180}{12}

x = 15°

11)

5x + 10 + 5x + 10 + 90 = 180

10x + 110 = 180

10x = 180 - 110

10x = 70

x = \frac{70}{10}

x = 7°

12)

6x - 30 = 60

6x = 60 + 30

6x = 90

x = \frac{90}{6}

x = 15°

13)

360 - α+ 360 - β+360 - θ = 180

1080 - α- β- θ= 180

1080 - 180 =α + β+ θ

α + β+ θ = 900°

14)

180 - 130 + x + 180 - 110 = 180

50 + x + 70 = 180

x + 120 = 180

x = 180 - 120

x = 60°

15)

180 - 10x + 180 - 12x + 40 = 180

400 - 22x = 180

400 - 180 = 22x

22x = 220

x = \frac{220}{22}

x = 10°

16)

(180 - 150 + 10 ) + x + 80 = 180

40 + x + 80 = 180

x + 120 = 180

x = 180 - 120

x = 60°

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