First one: Add -3x to each side Explanation 5x-3x will leave you with 2x on one side and only 7 on the other side of the equal sign Second one: Multiply each side by 1/3 Explanation: Multiplying by a fraction is the equivalent to dividing. If you divide each number by 3 you are left with 4x + 1 = 2 Third one: Add -3 to each side Explanation: Since -3 has no variable you can only subtract from the real numbers giving you 7 - 6x = 1 + 5x Fourth: Multiple each side by -3 Explanation: Multiplication reverses division so multiplying 5x/-3 by -3 eliminates the -3 leaving you with 5x. the other side is just 12, and 12 • -3 = -36 Last one: Multiply by -1/3 Explanation: Like I said earlier, multiplication and division eliminate each other so on the first side it eliminates -3 and on the other side you just preform normal division. Hope this helps! :)