Question

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Answer 1

Resposta:

D) x = 40°

E) x = 30°

Explicação passo a passo:

D) 2x + 100 = 180

2x = 180 - 100

x = 80/2

x = 40°

E) 3x + 90 = 180

3x = 180 - 90

x = 90/3

x = 30°

Answer 2

Resposta:

d) 2x+100°= 180°

2x= 180°-100°

2x=80°

x=80°/2

x=40°

e) 3x+ 90°= 180°

3x= 180°-90°

3x= 90°

x=90°/3

x= 30°