MikiasL659191 MikiasL659191

30-10-2022
Mathematics

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r - 20 = 19A. Add 20 to both sides B. Subtract 20 from both sides C. Add 19 to both sides D. Subtract 19 from both sides

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ZaeQ472528 ZaeQ472528

30-10-2022

[tex]\begin{gathered} r-20=19 \\ \text{add 20 to both sides} \\ r-20+20=19+20 \\ r=39 \end{gathered}[/tex]

The answer is A. we add 20 to both sides to isolate the variable r.

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