10n - 8n = -10
Hope this helps!
Answer:
2/5
Step-by-step explanation:
12, 994 gallons
20(122) = 2440
15434 - 2440 = 12, 994
m = 28
70 × 2 = 5m
140 = 5m
28 = m
Answer: 47
simply substitute the constants with 5 and 3.
(5)^2 + 9(3) - 5 = 47