EDIT --> Fat got 1-4 right, but I'll show you another way of doing #4 :)
Here are 4, 5, and 6.
Okay, you can divide both sides by 6; yielding:
[6(Q+22)]/6 = -20
Q+22 = -20
Q = -42.
Plug it back in to the equation;
6(-42 + 22) = 6(-20) = -120. This checks out.
Standard form is Ax...