Question

determinati valoare expresiei x-y+z daca:
a) x=-3, y=-7, z=-12
b) x=9, y=12, z=-8
c) x=-21, y=-6, z=17

Answer 1

a)x-y+z=-23
b)-11
c)-10

Answer 2

a) -3-7+(-12)
-3-19
-21
b) 9-12+(-8)
9-12-8
9-20
-11
c). -21-(-6)+17
-21+6+17
-21+23
+2