Which will solve the equation 12 = n — ?
9

A Add 12 to both sides.
B Add 9 to both sides.
© Multiply both sides by 12.
D Multiply both sides by 9.

Step-by-step explanation:

12=12n

We move all terms to the left:

12-(12n)=0

We move all terms containing n to the left, all other terms to the right

-12n=-12

n=-12/-12

n=1

but which class are u may know that first

a is 8.b is 10.c is 10.5. d is -.5

step-by-step explanation:

just minus the smallest number from the biggest.