Answer:
Way 1: Determine "what" plus 3 equals 12
Way 2: Regularly take away 3 from 12
Step-by-step explanation:
[1] Let's see if I am correct, shall we?
[tex]n+3=12[/tex]
Subtract 3 from both sides giving you...
[tex]n=9[/tex]
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[2] Let's see if I am correct, shall we?
[tex]12-3=n[/tex]
Take away 3 from 12 which gives you...
[tex]9=n[/tex]
