SOLUTION: 4 + /r+2/ = 7
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Question 104564: 4 + /r+2/ = 7
Found 2 solutions by edjones, Fombitz:
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
4+|r+2|=7
|r+2|=3
.
r+2=3
r=3-2
r=1
.
r+2=-3
r=-3-2
r=-5
.
Check:
4+|1+2|=7 true
4+|-5+2|=7 true
.
Ed
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Additive inverse of 4.
Simplify.
The absolute value function is defined as
if and
if
Since we don't know the value of (r+2), we solve for both cases.
Assume , then
Assume , then
Check your answers.
r=1
Good answer.
r=-5
Good answer.
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