Answer:
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Step-by-step explanation:
Answer:
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Step-by-step explanation:
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Answer:

Step-by-step explanation:
To solve the equation, isolate x. Whatever you do to isolate x one on side, you must do to the other.
1) Multiply both sides by 9 to get rid of the fractions.

2) Distribute the 3 to 8x and 15. Then, combine like terms.
3) Move the 66 to the other side, subtracting 18 by 66, then divide each side by 20 to finally isolate x.

Thus,
.
The answer is 6 because 21+9=30 and 30-6=24 and 24 is the number of students in the class.
Divide 100.5 by 1.5 to get 67.67