030702princessjs
11.02.2020 •
Mathematics
How do i solve the equation 72= -6r
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Ответ:
-5+n/3=2+n/2
add 5 to both sides
n/3=n/2+7
times 6 both sides
2n=3n+42
minus 2n both sides
0=n+42
minus 42 boh sides
-42=n
the number is -42
the number is 18