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

asked Oct 13, 2023 214k views

1 vote

by Ted

4.9k points

Please log in or register to add a comment.

0 votes

$\begin{gathered} r-20=19 \\ \text{add 20 to both sides} \\ r-20+20=19+20 \\ r=39 \end{gathered}$

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

4.3k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.1m questions

6.7m answers