Question

resolver {( -7/5+9/10) -7/5=-21/10 resolver paso a paso

Answer 1

{(-7/5+9/10)-7/5=-21/10
{(-14+9)/10-7/5=-21/10
{-5/10-7/5=-21/10
(-5-14)/10=-21/10
-19/10≠-21/10