2 answers:
You know both the lines added together give you 35
So r+3+4r-28 = 35
Collect like terms
5r-25=35
Add 25 to each side
5r=60
Divide both sides by 5
r=12
Answer:
r = 12
Step-by-step explanation:
DG + GM = DM , substitute values
r + 3 + 4r - 28 = 35 , that is
5r - 25 = 35 ( add 25 to both sides )
5r = 60 ( divide both sides by 5 )
r = 12
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