Answer: (x,y) = (-10, -9)
Step-by-step explanation:
(By replacement method ...)
1- x = -2-8 it's the same thing as x = -10.
2- Replace the given value of x in equation 3x - 4y = 6
Replacing ...
3 * (-10) -4y = 6
3- Then, Multiply 3 by -10;
4) Move -30 to the right side of the equal sign, getting: 6 + 30.
-4y = 36
5) Multiply by -1
-4y * (- 1) = 36 * (- 1) is equal to 4y = -36
6) The four is multiplying the y, so pass the four dividing, getting:
-36/4
The ratio of -36 by 4 equals -9.
Therefore...
x = -10
y = -9
