Answer:
r = 11
Step-by-step explanation:
mDG and mGM must add up to mDM
Step 1: Set up equation
mDG + mGM = mDM
r + 5 + 3r - 14 = 35
Step 2: Solve for <em>r</em>
<u>Combine like terms:</u> 4r - 9 = 35
<u>Add 9 to both sides:</u> 4r = 44
<u>Divide both sides by 4:</u> r = 11
Answer:
3
Step-by-step explanation:

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