Explanation:
5-55+41=15
50+41=15
91=15
94-15
=79
3r+55-61=7
3r=7+61-55
3r=7+6
3r=13
3r/3=13/3
r=13/3
r+5s-5=20
r+5s=20+5
r+5s=25
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