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Sagot :
Answer:
x = 0
Step-by-step explanation:
9x - 7 = -7
- Add 7 on both sides so that 9x can be isolated
9x - 7 + 7 = -7 + 7
9x = 0
- Divide by 9 on both sides so x can be by itself
9/9x = 0/9
x = 0
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