Answer:
r = 9
Step-by-step explanation:
Given
r + 3 = 3(r - 5) ← distribute
r + 3 = 3r - 15 ( subtract r from both sides )
3 = 2r - 15 ( add 15 to both sides )
18 = 2r ( divide both sides by 2 )
9 = r
Answer:
r = 9
Step-by-step explanation:
r + 3 =3 (r - 5)
1. remove brackets and simplify
r + 3 = 3r − 15
2. Subtract 3r from both sides
r + 3 −3r = 3r −15 −3r
−2r + 3 = −15
3. Subtract 3 from both sides.
−2r + 3 −3 = −15 −3
−2r = −18
4. Divide both sides by -2.
−2r = −18
___ ___
-2 = -2
r = 9
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