betinkerbell
contestada

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 ??

Respuesta :

carlosego
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