What is the solution to the following system?

The correct answer is option 3. (20, 4, 5)

Step-by-step explanation:

To solve this problem we use the substitution method.

(i)

(ii)

(iii)  

We start by clearing x in (iii) and clearing y in (ii).

(iii)

(ii)

Now we substitute (iii) in (ii)

(iv)

Now we substitute (iii) and (iv) into (i) and clear z.

(v)

If (v)

We substitute (v) in (iii) and then substitute (v) in (iv)

The correct answer is option 3.

sorry, i can't understand your question. will later if you describe more clearly!

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there are 70 more legs than eyes at the dog show (196 – 126 = 70). dogs have two more legs than eyes, and humans have the same number of legs as eyes. thus 70 is twice the number of dogs at the show, so the number of dogs is half of 70, which is 35. to get the number of humans, subtract 35 from 63: 63 – 35 = 28.

step-by-step explanation: