Math Solve for both systems: 5z+y=46 and 3y + 6z = 57 Asked by AnneS2 12 years ago 10/8/2013 4:44 AM Last updated by anonymous 12 years ago 10/9/2013 4:07 PM
5z+y=46 5z-5z+y=46-5z y=46-5z 3y + 6z = 57 3(46-5z) + 6z = 57 3(46) (3)(-5z) + 6z = 57 138-15z+ 6z = 57 138-9z = 57 138-9z-138 = 57-138 -9z=-81 -9z/-9=-81/-9 z=9 y=46-5z y=46-5(9) y=46-45=1
