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4*m-56=8
m=(8+56)/4
m=16
7² + 9º=4p-√16+2p
49 + 1=4p-4+2p
(49+1+4)/6=p
p=9
3(x-4)+2(x-2)=14
3x-12+2x-4=14
x=(14+4+12)/5
x=6
15*3+19k=3²*10-7
45+19k=9*10-7
45+19k=90-7
k=(90-7-45)/19
k=2