Angle c and angle d are congruent. Congruent means they have the same the measure, or they have EQUAL measures. You set the two values equal to each other and solve for x. X+26=2x-10 subtract x from both sides 26=x-10 add 10 to both sides 36=x
Now substitute x back in for angle d. 2(36)-10 = 62
Diana's age=21 years Carmen's age=x years Andrew's age=2x years 21+x+2x=45 21+3x=45 3x=45-21 3x=24 x=24/3 x=8 2x8=16 Carmen is 8 years old and Andrew is 16 years old. Hoped that helps:)
