Question 1102334
Two times the sum of a number and seven equals negative thirty
Lightning fast made an error in arithmetic and
and  he forgot that the 30 is negative thirty
2x + 14 = -30
you need to subtract 14 from -30
2x=-30-14
2x=-44
 
josgarithmetic also forgot that the 30 is negative 30 in his explanation
He says

"..., equals thirty."
He corrected the oversight.