! Means starting from that number multiply by every number down to 1.
5!= 5•4•3•2•1 = 20•6=120
2!= 2•1=2
120+2=122 :)
13 x 85 = 1105
78 + 91 = 169
169 / 1105 = 6.5
Answer:
°
Step-by-step explanation:



subtract
form both sides

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