Answer:
first finish multiplying the signs that are out of the brackets
4-2+3-6
remember the BODMAS, addition comes first
4+5-6
9-6
3
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Step-by-step explanation:
Answer:
A and E, The first and the last
You divide each of the ratios by 64:60
This gives;

=16:15
Hm...I'm not quite sure..but if we were to write a function..hm....Honestly I'm not sure.