Question

qual o valor x de 2x-30°+3x+10°=180°

Answer 1

2x+3x=180°+30°-10°
5x=200°
x=200°÷5
x=40°

Answer 2

2x - 30 + 3x + 10 = 180

2x + 3 x = 180 + 30 - 10

5x = 210 - 10

5x = 200

x= 200/5

x= 40º