ANSWER:
1.) 5y + 9 = 13
- Five times a number increased by nine is thirteen
2.) 2f + 5 = 6
- Twice a number increased by five is six
3.) -3(m + n)
- Negative three multiplied to the sum of 2 numbers
4.) 2n - 13 = 9
- Twice a number decreased by thirteen is nine
5.) 20 - 2x = 10
- Twenty decreased by twice a number is ten
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