HW Score 0 Question x39 3x53 E Solutionsum of angles of a tr

Solution

sum of angles of a triangle is equal to 180 degrees

so we can write the equation as

A + B + C = 180

x + 39 + 3x - 3 + 1/3 x - 53 = 180

adding up the like terms

13x / 3 - 17 = 180

adding 17 on both sides

13x/3 = 197

x = 45.46

angle A = (3x-3) = 3*45.46 - 3 = 133.384