7(3r-1) - (r+5) = - 52
21r - 7 - r - 5 = - 52
20r = - 52 +12
r = - 40/20
r = - 2
Answer:
- 2
Explanation:
Step 1:
Step 2:
20r - 12 = - 52
Step 3:
20r = - 40
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