jean281982 jean281982 18-02-2021 Mathematics contestada Evaluate using the given values.a=1 b=2 c=3 x= -3 y= -2 z= -11.)2a+b/2 -c/b2.)4x+3y3.)5ab4.)7y+2b5.)7+a6.)2b/4y7.)3c-5z^28.)xyz9.)ab/y^210.)6/abc