Question

I need help on solving number 6

Answer 1

z + 7 = -9

Subtract 7 from both sides.

z+7−7=−9−7

z=−16

Answer:

z = −16

Answer 2

z= -16
first you have to subtract 7 from both sides by using inverse operation
-7 =-9
+7 =-9
the 7's cancel out and your left with (z= -9)
                                                               -7
                                                             ___
                                                          z=-16