Suzee123 Suzee123

30-11-2018
Mathematics

contestada

If 18 +3 = n-7 then what is n

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xxxsanyeo xxxsanyeo

30-11-2018

Answer:

28

Step-by-step explanation:

18 + 3 = 21

28 - 7 = 21

Answer Link

shaunalab shaunalab

30-11-2018

1. Simplify 18 + 3 to 21. 21 = n - 7
2. Add 7 to both sides. 21 + 7 = n
3. Simplify 21 + 7 to 28. 28 = n
4. Switch sides. n = 28

Answer Link

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