Answer:
8r+20=10r
20=2r
10=r
Hope this helped
Expand: Use the Distributive Property to multiply 4 by 2r+5:
Subtract 20 from both sides:
Subtract 10r from both sides:
Divide both sides by -2:
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5x^3-x-3
Step-by-step explanation:
5x^3-2-x-1