Answer:
yeah it's right! good job! :D #markasbrainliest
I) -7s^2+28st+21su
II) -8c^2+20cd
Answer:
x = -12
y = 11
Step-by-step explanation:
i used substitution and let 'x' = 10 - 2y
3(10 - 2y) + 4y = 8
30 - 6y + 4y = 8
30 -2y = 8
-2y = -22
y = 11
x + 2(11) = 10
x + 22 = 10
x = -12
I think it's 64. Not positive, but pretty sure it is.
