Answer:
Subtraction property of equality
Step-by-step explanation:
[tex]x+1=-2\\[/tex]
Move 1 to the [tex]x = -2-1\\simplify\\\\x = -3[/tex]right and change its sign
Last one
Gabriella's step is justified by the substraction property of equality.
● x + 1 = -2
Gabriella substracted 1 from both sides
● x + 1 - 1 = -2 - 1
● x = -3
