Question

Wich method would be the simplest way to solve the system 7X+5y=19 -7X-2y=-16. A- graphing B- substitution C- elemination D- distributive ??

Answer 1

C- elemination or reduction
Method of elimination or reduction
Adding two equations is to obtain a new equation whose right (left) member is the sum of the right (left) members of the equations that are added together.
7X+5y=19
-7X-2y=-16.
Adding two equations
3y=3 ---> y=1
then
7x+5(1)=19
7x=19-5
x=14/7=2