clietmaster112
06.05.2020 •
Mathematics
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Ответ:
x = the 10s digit
y = the units
N1> original number
N2> new number
N2=N1+36 >N2-N1=36
y+x=8 > equation (I)
then
10x + y = N1
10y+x=N2
(10y+x)-(10x+y)=36- > 9y-9x=36 > y-x=4 > equation (II)
resolving (I) and (II)
y+x=8
y- x=4
2y+0x=12 >y=6
then
x=8-y=8-6=2> x=2
N1=26 and N2=62
the two digit number is 26