garrismunoz garrismunoz 15-10-2019 Mathematics contestada PLEASE HELP AND EXPLAIN! (3 different problems)4-c/4-(2+b); use b= -4 and c= -4y times z/4(x+x); use x= -3, y= 6, and z= -4y- x+5+y/4; use x=4 and y= -1