help guys i dont have 20 charatecrs so um qwertghbvcsdertyuikjhbvcxdser678iokjhbvcdrtyuiokjnbvcxgdchaasio

Answer:
-1 1/2 (simplified)
Step-by-step explanation:
Multiply 9/10 by the reciprocal of -3/5 (so switch the number so -3/5 becomes -5/3)
Then, multiply