Question

Please do number 12 for me.

Answer 1

72

Explanation:

15x + 21x +24x = 180 (Angle sum property of a triangle.)

60x = 180

x = 3

hence largest angle = 72

Answer 2

72

Explanation:

24x + 21x + 15x =180

60x= 180

x=3

Largest angle =24x

=24*3=72