Answer:
a equals negative 37 over 24
Explanation:
-a-(7/8)=2/3
Add 7/8 to 2/3.
Multiply the numerator and denominator of each fraction by the other's denominator. This keeps the same value for each fraction, but makes them easier to add because they have the same denominator.
(7*3)/(8*3)+(2*8)/(3*8)
(21/24)+(16/24)
Add the fractions (add the numerators and keep the denominator).
(21/24)+(16/24)=37/24 or 1 13/24
-a=37/24
Divide 37/24 by -1.
a=-37/24