Math Solve for both systems: 7z+4x=83 and z + 4x = 53 Asked by AnneS2 on 02 Oct 07:03 Last updated by anonymous on 03 Oct 11:59
z + 4x = 53 z + 4x-4x = 53-4x z= 53-4x 7z+4x=83 7( 53-4x)+4x=83 7( 53) (7)(-4x)+4x=83 371-28x+4x=83 371-24x=83 371-371-24x=83-371 -24x=-288 -24x/-24=-288/-24 x=12 z= 53-4x z= 53-4(12) z= 53-48=5