Darpana solved the equation s = a+b+c/3 for a. her steps are shown below:
1. multiply by 3: s=a+b+c/3
3s=a+b+c

2. subtract b: 3s-b=a+b+c-b
3s-b=a+c
3. divide by c: 3s-b/c=a
which statement about darpana’s work is true?
in step 1 she needed to divide by 3 rather than multiply.
in step 2 she needed to add b rather than subtract.
in step 3 she needed to subtract c rather than divide.
darpana solved the equation correctly.

The true statement is: In step 3 she needed to subtract c rather than divide.

Step-by-step explanation:

Lets solve our equation step by step.

Step 1. Since 3 is the denominator of the right hand side, we need to multiply both sides of the equation by 3:

Now we can cancel the 3 in the numerator and the 3 in the denominator to get

As you can see, the first statement is false

Step 2. Since we want to isolate the variable , we need to subtract b from both sides of the equation:

The second statement is also false

Step 3. The last thing we to do to isolate (and solve for it) is subtract c from both sides of the equation:

Therefore, the third statement is true: In step 3 she needed to subtract c rather than divide.

Third option (In step 3 she needed to subtract c rather than divide)

Step-by-step explanation:

When she subtract b from both sides of the equation, she obtained:

Therefore, to leave the a alone at one member of the equation, she needs to subtract c from both sides of the equation.

Then, she would obtain the following:

Therefore the answer is the third option: In step 3 she needed to subtract c rather than divide.

a line is an defined derm because it

a)contains an infinite number of points b) can be used to create other geometric shapes c)describes something that does not have width or depth d) is a term that does not have a formal definition. a line is an undefined term because it: contains an infinite number of points.

this is a good question! i’ll do some research and what i find, i’ll contact you asap when i have something! ✊