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coldgirl [10]
2 years ago
14

10a-4b+10-9b? can someone help

Mathematics
2 answers:
zhannawk [14.2K]2 years ago
7 0

Answer: 10a -13b + 10

Step-by-step explanation:

Combine like terms

10a - 4b - 9b + 10

10a -13b +10

Shkiper50 [21]2 years ago
5 0

Answer:

10a - 13b + 10

Step-by-step explanation:

Combine like terms.

-4b + (-9b) = -13b

10a

10

10a - 13b + 10

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A number, half of that number, and one fifth of that number are added. The result is 51. What is the original number?
Lera25 [3.4K]
Let the original number be ‘x’
Then half of that number= 1/2x or simply x/2
Similarly one fifth of that number = x/5
According to the question
x+x/2+x/5=51
Taking LCM
10x/10+2x/10+5x/10=51
Multiplying 10 throughout
10x+2x+5x=510
17x=510
x=510/17
Therefore x=30
7 0
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A plane left Kennedy airport on Tuesday morning for an 890 mile 8 hour trip for the first part of the trip the average speed was
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