14x+7y=-217;14x+3y=189 Solution : {x,y} = {141/4,-203/2} System of Linear Equations entered : [1] 14x + 7y = -217 [2] 14x + 3y = 189 Graphic Representation of the Equations : 7y + 14x = -217 3y + 14x = 189 Skip Ad
Solve by Substitution :// Solve equation [2] for the variable y
[2] 3y = -14x + 189 [2] y = -14x/3 + 63// Plug this in for variable y in equation [1]
[1] 14x + 7•(-14x/3+63) = -217 [1] -56x/3 = -658 [1] -56x = -1974 // Solve equation [1] for the variable x
[1] 56x = 1974 [1] x = 141/4 // By now we know this much : x = 141/4 y = -14x/3+63// Use the x value to solve for y
y = -(14/3)(141/4)+63 = -203/2 Solution : {x,y} = {141/4,-203/2}