Question

HELP!!!
1-Calcule x:
a)x+165°+2x=180°
b)3x-15°+2x-5°=90°
c)10x-40°=4x+20°
d)x+60°=3x-40°​

Answer 1

Resposta:

a) x+165°+2x=180°

x+2x = 180°-165°

3x = 15

x= 15/3 = 5

x=5°

b) 3x-15°+2x-5° = 90°

3x+2x = 90°+15°+5°

5x = 110

x = 110/5

x= 22°

c) 10x-40° = 4x+20°

10x-4x = 20°+40°

6x= 60°

x= 60°/6

x= 10°

d) x+60° = 3x-40°

x = 3x-40°-60°

x = 3x-100

-3x+x = -100

-2x = -100

x = -100° / -2

x= 50°