Question

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Answer 1

Resposta:

a)x=34°

b)x=20°

c)x=25°

d)x=20°

e)x=36°

f)x=26°

g)x=34°

h)x=25°

i)x=36°

j)x=46°

Explicação passo-a-passo:

a) 3x+20°+2x-30°=180°

5x=180°+10°

5x=170°

x=170°/5

x=34°

b)3x+15°=x+55°

3x-x=55°-15°

2x=40°

x=40°/2

x=20°

c)2x+50°+3x+5°=180°

5x=180°-55°

5x=125°

x=125°/5

x=25°

d)2x=3x-20°

2x-3x=-20°

-x=-20°(-1)

x=20°

e)2x+3x=180°

5x=180°

x=180°/5

x=36°

f)3x+8°=x+50°

3x-x=50°-8°

2x=52°

x=52°/2

x=26°

g)3x+20°+2x-30°=180°

5x=180°+10°

5x=170°

x=170°/5

x=34°

h)60°-x=x+10°

-x-x=10°-60°

-2x=-50°(-1)

2x=50°

x=50°/2

x=25°

i)2x+3x=180°

5x=180°

x=180°/5

x=36°

j)2x+3x-50°=180°

5x=180°+50°

5x=230°

x=230°/5

x=46°