Answer:



Step-by-step explanation:
-13+13r
-22+6r-7
bring all r and number one oppsite sides
13r - 6r
-22-7+13
7r
-16
r

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Subtract 2 from 12. 12-2 is 10. You can subtract 10 with 4, and then add 2. (10-4)+2=8.
- 5 1/4 <span>÷ 2 3/4 =
= - 21/4 </span><span>÷ 11/4
= - 21/4 * 4/11
= - 21/11
= - 1 10/11
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Answer: 58
Step-by-step explanation: You just have to divide 350 and 6