Answer:
Ted is correct. Maggie made mistakes while trying to isolate x for both equations.
Step-by-step explanation:
For 3x-2=0, in order to move -2 to the left side, Maggie had to add 2 on both sides because -2+2=0. The same problem is seen for x+5=0. Maggie had to subtract 5 on both sides because +5-5=0
Explanation:
AB=7
AC=9
You are looking for R
7+9=16
So R is 16
1+1=2
You should know this by now....
Answer:

Explanation:
The given expression is:

Combine like terms

Simplify the resulting expression

Substitute x = 3 and y = -1 into the simplified expression
3 over 4 is already simplified. 15 over 12 is 5 over 4. If you are having trouble with the concept, www.ducksters.com/kidsmath/fractions_reducing_simplifying.php is a great guide