Question 517938
2x + 3 = 16
    2x = 16 - 3
    2x = 13
     x = 6.5

you just separate the variable from the constants, switching operations (+ become -, etc.) when you move a constant to the other side of the equal sign.

you can always check if your answr is right by subbing in your answer into the equation. so...

    2x + 3 = 16
2(6.5) + 3 = 16
    13 + 3 = 16
        16 = 16

therefore the answer is 16 for sure now. :)