The seven is not right must be
15:(1+2)=5 first the pharentesis 15:3=5
They way that you put the answer of the seven is not correct, the pharentesis is not needed in the case like you use it because anyway (without pharentesis in other places) the division go first that the sum
and the eight is correct
Example
Short-form Possessive Adjectives - most common<span><span>SingularPlural
</span><span>
1st personmi(s) (my)nuestro, nuestra (our) nuestros, nuestras
</span><span>
2nd persontu(s) (your familiar)vuestro, vuestra (your familiar) vuestros, vuestras
</span><span>
3rd personsu(s) (his, her, your formal)<span>su(s) (their, your formal)</span></span></span>
The narrator in El Viejo Goleador, by José Cantero Verni, is talking to a soccer player who is “old” and people did not believe in him.
8 Years that was kinda ruff to find