Question

13y=187^2-174^2, find y

Answer 1

Answer:

y=361

Step-by-step explanation:

187^2-174^2 = 4693

4693/13 = 361

13 x 361 = 4693

Answer 2

Answer: y = 361

Step-by-step explanation:

1. 13y = 187^2 - 174^2

2. 13y = (187 - 174) x (187 + 174) --- (use a^2 - b^2 = (a-b)(a+b)

3. 13y = 13(187 + 174) ---- (subtract the number)

4. 13y = 13 x 361 --- (add the numbers)

5. 13y = 4693 --- (multiply)

6. y = 361 ---- (divide)