-2x + 3y = 20 --- (1)
-10x - 3y = 28 --- (2)
From (2), we have:
3y = -10x - 28 --- (3)
Substituting (3) into (1), we will get:
-2x + (-10x - 28) = 20
-2x - 10x - 28 = 20
-12x - 28 = 20
12x = -28 - 20
12x = -48
x = -48 / 12
x = -4
Substituting x = -4 into (3), we will get:
3y = -10(-4) - 28
3y = 40 - 28
3y = 12
y = 12 / 3
y = 4
Hence, x = -4 and y = 4