10000-999999+99999-01919190+56251-716182=−3469121
Here are the steps. The bolded text indicates what portion of the given equation I calculated for every step.
10000-999999+99999-01919190+56251-716182=x
−989999+99999-01919190+56251-716182=x
−890000-01919190+56251-716182=x
−2809190+56251-716182=x
−2752939-716182=x
−3469121=x