Respuesta :

Answer: 39. x= 37, 41. x=7, 43. x = 29

Step-by-step explanation:

39. 2x + 4 + 2x - 9 + x = 180

5x - 5 = 180

5x=185

185/5

x=37

41. 90 + 8x - 1 + 4x+7 =180

8x-1+4x+7=90

12x+6=90

12x=84

84/12

x=7

36+x=2x+7

36=x+7

29=x

Hope this helps.

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Answer:

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