Answer:
-320 i guess
Step-by-step explanation:
51*-2*3-21+7=-320
Answer:
12.5%
Step-by-step explanation:
8/64
(8*100)/64 = 12.5
Answer:
-x-3, 7x-3, -15
Step-by-step explanation:
For first 2 just add/subtract their equations. For the last one (r.s)(-1) is the same as r(s(-1)) so s(-1)=4(-1)=-4 and r(-4)=3(-4)-3=-12-3=-15
