Answer:
First answer is y = 7
Second answer is x = -1
Step-by-step explanation:
First answer explanation:
-x + 5y = 5 and
x + 2y = 9
we can add those 2 together to eliminate the x value then continue to solve for y
7y = 14
divide both by 7
y = 7
Second answer explanation:
-3x + 2y = 13 and
5x - 4y = -25
This one we need to multiply the top equation to get the y's to eliminate once added together.
multiply the top equation by 2
-6x + 4y = 26
then add both equations together like the last one (This time the y is gone because the -4y and +4y cancel each other out)
-6x = 26
5x = -25
-1x = 1
divide both sides by -1
x = -1
