Answer:
A) (2, -1/2)
Step-by-step explanation:
Start with one equation and isolate a variable:
4x - 4y = 10
4x - 4x - 4y = 10 - 4x
-4y = 10 - 4x
-4y/-4 = 10/-4 - 4x/-4
y = -2 1/2 + x
Now plug this in for y in the other equation:
3x + 2(-2 1/2 + x) = 5
3x - 5 + 2x = 5
5x - 5 = 5
5x - 5 + 5 = 5 + 5
5x = 10
5x/5 = 10/5
x = 2
Right here we can tell your answer is A since it is the only one with 2 as the x-value
