Geometry please help me

Answer:
12
Step-by-step explanation:
∆ABC ~∆DEF
so /A =/D
= 42° = 4x-6°
= 4x° = 42°+ 6°
= 4x° = 48°
= x = 48/4
= x = 12°
/B = /E
= 7x + 10° = 94 °
= 7x = 94° - 10°
= 7x = 84°
= x = 84°/7°
= x = 12°
please please please please please please