Makahanap ng mabilis na mga solusyon sa iyong mga problema sa IDNStudy.com. Makakuha ng mabilis at eksaktong sagot sa iyong mga tanong mula sa aming mga eksperto na laging handang tumulong.

what is the answer of
2x-y=17
x-y=10
Note: THIS IS SOLVING LINEAR EQUATIONS BY ELIMINATION
NEED ANSWERS PLS ASASASASAP


Sagot :

By elimination method:

To eliminate y, subtract the second equation from the first.  The rule in subtraction of  polynomials: change the sign of each term then proceed to addition rule of integers.

      2x - y= 17
   -   x+y = -10  
      x      =  7

Substitute 7 to x in any given equation to find y:
   2x - y = 17
   2(7) - y = 17
   14 - y = 17
       -y = 17 - 14
       -y = 3
        y = -3

x = 7;  y= -3 is the solution to the system.
The point of intersection when you graph the linear equations is (7, -3)