PRoof reasons in Algebra

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Statements Reasons
1. 3x - 7 = -4 1.
2. 3x - 7 + 7 = -4 + 7 2.
3. 3x + 0 = -4 + 7 3.
4. 3x + 0 = 3 4.
5. 3x = 3 5.
6. (1/3) 3x = 3 (1/3) 6.
7. (1/3) 3x = 1 7.
8. 1x = 1 8.
9. x = 1 9.

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