Question

4. 17X (-23 + (-23 ) X 13​

Answer 1

Answer:

Step-by-step explanation:

Equation 1 :  

Equation 2 :  

Multiply equation 1 with 23 and equation 2 with 17

So, New equation 1 : 391x+529y = 920 --- A

New equation 2 : 391x+289y = 1360 -- B

Subtract B from A

391x+529y -391x-289y= 920 -1360

240y=−440

Substitute the value of y in 1

So,  

Hence X+Y = 3

#Learn more :

If x is 10% of y and value of x is 500 find the value of y