Question

b
–
2
+1=10
b
–
2
=9
Add 1 to both sides
Subtract 1 from both sides
Multiply both sides by 1
Divide both sides by 1
Apply the distributive property
b=
Multiply both sides by
–
2

Answer 1

It looks like you started with
b − 2 + 1 = 10
and then wrote
b − 2 = 9.

To get from the first line to the second you subtracted 1 from both sides. (So the correct choice is "Subtract 1 from both sides".)

Now solve for b from b − 2 = 9: add 2 to both sides to get b = 11.

(You do not need to multiply both sides by −2 for this problem.)