math

can someone check my work please?
1. Seven times a number, added to the sum of the number and eight.

7*x+8

2. A number multiplied by -7 less 11

X*(-7)-11

3. A number multiplied by 9, added to -8

X*9+(-8)

4. 8.7 less than a number

8.7-x

5. The sum of a number and 12 decreased by 10 ¾

X+12-10 3/4

6. The product of a number and -5 less than 7.2

X*(-5)-7.2

7. The quotient of a number and 2 subtracted from 5

X/2-5

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asked by Abby
  1. 1. (Seven times a number), added to (the sum of the number and eight).
    ---> 7x + x+8 = 8x + 8

    4. 8.7 less than a number
    ----> x - 8.7
    (if I said "3 less than 8", you would take 8-3 , not 3 - 8, wouldn't you ? )

    7. The quotient of a number and 2 subtracted from 5
    the quotient is subtracted FROM 5
    so, 5 - x/2

    the rest are correct

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    posted by Reiny
  2. Thank you soo much! This really helps!

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    posted by Abby
  3. A number is multiples by 6 and that product is added to 3 the sum is equal to the product of 3 and 11 find the number

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    posted by Sierra

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