1973 Canadian MO Problems/Problem 2

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Problem

Find all real numbers that satisfy the equation $|x+3|-|x-1|=x+1$. (Note: $|a| = a$ if $a\ge 0; |a|=-a$ if $a<0$.)

Solution

See also

1973 Canadian MO (Problems)
Preceded by
Problem 1
1 2 3 4 5 Followed by
Problem 3