Answer:
Step-by-step explanation:
Step 1: Factor out the common term 
Step 2: Add the whole numbers
Step 3: Combine the fractions:
Step 4: Convert the improper fractions to mixed numbers
Step 5: Add the numbers
Therefore, the answer to the equation is in fraction, and decimal; 
The given expression is :
2xx+3-5(x-2)
We know that, 
Aleena expands 2xx+3-5(x-2) as 2x²+3-5x-10. She is mistaken because the sign before 10 should be +10 instead of -10. Hence, the correct expanded form is 2x²+3-5x+10. Hence, this is the required solution.
Ayanna is 17 and Brittany is 14.
To find this, let's write two equations using the given information.
a = b + 3
3b + 2a = 76
Now, just substitute the first equation into the second and solve.
3b + 2(b + 3) = 76
3b + 2b + 6 = 76
5b = 70
b = 14
If Brittany is 14, then Ayanna is 3 years older at 17.
A = ((6 + 7 + 6) . 8)/2
A = 19 . 4
A = 76
Can u add the dot plot? Then I can help you! :D
