tolong jawab pakai cara

=2x+3x-10=90
=5x=90+10
=x=100/5
x=20

sudut ABD
=3x-10
=3.20-10
=60-10
=50

semoga membantu

3x - 10 + 2x = 90
3x + 2x = 90 + 10
5x = 100
x = 100/5
x = 20

sudut ABD = 3x - 10
= 3(20) - 10
= 60 - 10
= 50°