Question

A medida dos dois ângulos 6x+5=8x-10

Answer 1

6x-8x=-10-5
-2x=-15
x=7,5

Answer 2

6x +5 = 8x -10
6x -8x = -10 -5 
-2x = -15 (-1)
2x = 15
x = 15/2
x = 7,5