Distribute the -2 to both z and 5
-2(z) = -2z
-2(5) = -10
-2z - 10 + 20 > 6
Simplify
-2z - 10 + 20 > 6
-2z + 10 > 6
Isolate the z, subtract 10 from both sides
-2z + 10 (-10) > 6 (-10)
-2z > 6 - 10
-2z > -4
Isolate the z, divide -2 from both sides
-2z/-2 > -4/-2
z > -4/-2
NOTE: Only flip the sign if you are dividing a negative number (negative number in denominator)
z < 2
z < 2 is your answer
hope this helps
