Question

Z - 12 = 6
A. 10
B. 15
C. 18
D. 6

Need help working it out

Answer 1

Z-12=6

you take the 12 and add it to both sides making it look like:
z-12+12=6+12
which also looks like
z-0=6+12

z-0 = z

so now you have
z=6+12

6+12 = 18

SO Z=18!!!

your answer is 18