Will give a brainliest if ur 100% correct

a student is attempting to simplify the expression below. sample mathematical work is shown. which statement best applies to the sample mathematical work?

given a+b-2 * (ab-a), i first apply the distributive property, which yields the expression a + b – 2ab + 2a. i can then collect like terms: since a + 2a = 3a, i have the expression 3a + b – 2ab as my final answer.

a.
the student failed to properly apply the distributive property.
b.
the student collected two or more terms that were not like terms.
c.
the student failed to collect all like terms.
d.
the mathematical work shown above is correct.

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )

x = 17

step-by-step explanation:

1st step: isolate x.

24 - 3x = -27

-24         -24

-3x   =   -51

2nd step: divide.

-3x     =   -51

  3             3

  x       =     17

hope this