What are the measures of a triangle with angles of (x+20) degrees (2x+10) degrees (4x-60) degrees?

In a triangle, the three interior angles always add to 180°

m∠1 = x+20

m∠2 = 2x+10

m∠3 = 4x-60

x + 20 + 2x + 10 + 4x - 60 = 180

7x - 30 = 180

7x = 180 + 30

7x = 210

x = 210/7

x = 30

m∠1 = x+20 = 30 + 20 = 50°

m∠2 = 2x+10 = 2*30 + 10 = 70°

m∠3 = 4x-60 = 4 * 30 - 60 = 60°