Answer:
x=7
Step-by-step explanation:
1. Distribute
2. Subtract 7x from both sides of the equation
3. Simplify
4. Divide both sides of the equation by the same term
5. Simplify
Answer: x=7
Answer is -21 1/3
-15 2/3
+ -5 2/3
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Answer is 21 1/3