Answer:
0
Explanation:
10r-5r=5r
5r+3r=8r
8r-8r=0
Combine like terms, perform the operations with the coefficients of the variable, then write the variable.
10r - 5r + 3r - 8r
= 5r + 3r - 8r
= 8r - 8r
= 0
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