Answer:
Step-by-step explanation:
13-16y is the same as -16y+13.
-10y^2 + (-3y^2) - 4y^2 - (-6y^2) =
-10y^2 - 3y^2 - 4y^2 + 6y^2 =
-17y^2 + 6y^2 =
- 11y^2
Is this a multiple choice
9:7 There are 18 girls to 14 boys. 18/14 divide top and bottom by 2 to simplify equals 9:7
Answer:
B
Step-by-step explanation:
Assume both their ages are 
One is 3 years older than the other, and the sum of their ages add up to 19
