They mowed total of 11/15 (5/15 + 2/5) already, so they still have 4/15.
Hopes this helps:
Answer: x = -10/7
1. Simplify 2 • 2 to 4
4 + 7x + 6 = 0
2. Simplify 4 + 7x + 6 to 7x + 10.
7x + 10 = 0
3. Subtract 10 from both sides.
7x = -10
4. Divide both sides by 7.
X = -10/7
A) 2 and 7
B) 2 and 6
C)6 and 3
Logically you can see that since 26 is half way between 24&28 it is 1/2 sd.
See sketch
