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Write a justification for each step...

Write a justification for each step...-example-1
User Kenshin
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1. Expand the bracket
2. Subtract 4x
3. Add 3
4. Value of x is shown

5. Substitute values in
6. Expand the bracket
7. Group values
8. Subtract 3n
9. Divide by 2
10. Value of n is shown
User Nicholjs
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