Answer:
3.3
Step-by-step explanation:
In equations you must remember the important rule of keeping both sides balanced. If you do one operation to one side you must do it to the other, for example if you added 1.1 to the right side you must do it to the left side in order to keep the equation balanced so,
→ 2.2 = z - 1.1
⇒ Add 1.1 to both sides to isolate z
→ 3.3 = z
⇄ We can substitute 3.3 back into the equation to see if we have the right solution, if we get 2.2 on both sides then our solution is correct
→ 2.2 = z - 1.1
⇒ Substitute 3.3 into the equation
→ 2.2 = 3.3 - 1.1
⇒ Simplify
→ 2.2 = 2.2
Our solution of z = 3.3 is correct
