Question

calcule as medidas dos ângulos... 2x=X,5x+10 = 4x-10,X-5= 2x+5

Answer 1

1)
2x = x
2x - x = 0
x = 0

2)
5x + 10 = 4x - 10
5x - 4x = - 10 - 10
x = - 20

3)
x - 5 = 2x + 5
x - 2x = 5 + 5
- x = 10 (-1)
x = - 10

Bons estudos.