x + 12x - 45 = 0
13x - 45 = 0
13x = -45
x = - 45/13 = -3.462 (rounded)
x = y = 0 ?
x=0
x = 0
x + 3y = 4 -x + 2y = -4 Simultan eous eq'ns. Eliminate 'x' by adding. 4 Hence 5y = 0 y = 0 When y = 0 Substitute x + 3(0) = 4 x + 0 = 4 x = 4 So the answer as a coordinate pairs is ( x,y) = ( 4,0)
x=-1.6
0 because X= -1
x=0
-5
x = 0
Identity
x = 0
x = 0