Answer:
x=20
Step-by-step explanation:
10x-60=140
10x=140+60
10x=200
x=20
Answer:
45
Step-by-step explanation:
8x - 9y = 11 (subtract 8x from each side)
- 9y = -8x + 11 (divide -9 from each side)

y =
D.
Answer:
5x^2+x-6
Step-by-step explanation:
(5x-1)(x+1)-5x+x-5+x
(5x^2+5x-x-1)-5x+x-5+x
5x^2+x-6