Question

calcule o valor de x​

Answer 1

Explicação passo-a-passo:

C) x + 50 = 90

x = 90 - 50

x = 40°

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A) x + 40 = 90

x = 90 - 40

x = 50°

B) x + 30 + x - 10 = 90

2x = 90 + 10 - 30

2x = 70

x = 35°

C) 2x + 3x = 90

5x = 90

x = 90/5

x = 18°

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a = 143° e b = 37°

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3x - 15 = 60

3x = 60 + 15

3x = 75

x = 75/3

x = 25°