Hi,
Solving:
[tex] - \frac{ 9}{10} - \frac{2}{5} [/tex]
1. Write all numerators above the least common denominator 10.
[tex] - \frac{ 9 + 4}{10} [/tex]
2. Add numbers.
[tex] \underline{\underline{ - \frac{13}{10} \approx - 1.3}}[/tex]
Hope this helps.
If you have any other questions comment below and I'll reply.
r3t40
