Supergirl: You check by inserting the number (in this case, 22) where the s was, and you see if it makes sense.
Also, CB didn’t write -4s = -4s, he just subtracted 4s from both sides.
Good luck on your test!
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Supergirl: You check by inserting the number (in this case, 22) where the s was, and you see if it makes sense.
Also, CB didn’t write -4s = -4s, he just subtracted 4s from both sides.
Good luck on your test!