Answer:
x = 16 and y = -6
Step-by-step explanation:
x + y = 10
x + 2y = 4
Multiply the first equation by -1 on both sides. Rewrite below it the second original equation.
-x - y = -10
x + 2y = 4
Add the two equations above.
y = -6
Now we solve for x. Multiply the first original equation by -2 on both sides and write the second original equation below it.
-2x - 2y = -20
x + 2y = 4
Add the two equations above.
-x = -16
Divide both sides by -1.
x = 16
Solution: x = 16 and y = -6
