Question

what is the value of the z in this equation z - 18 = 21​

Answer 1

Answer:

z = 39

Step-by-step explanation:

Given

z - 18 = 21 ( isolate z by adding 18 to both sides )

z = 39

Answer 2

Answer:

z = 39

Step-by-step explanation:

z - 18 = 21​

Add 18 to both sides;

z - 18 + 18 = 21 + 18

21 + 18 = 39

Hence,

z = 39