Solve 1/2x + 7 = x - 3

x=20

Step-by-step explanation:

1/2x + 7  =x -3            add 3 to both sides

          +3      +3

1/2x + 10 = x          Subtract 1/2x from both sides

-1/2x          -1/2x

        10 = 1/2x

  x = 20

Step-by-step explanation:

We can solve for x by simplifying the equation until we have x isolated on one side.

Subtract 7 from both sides:

Subtract x from both sides:

Multiply both sides by -2:

Hope this helped!

The probability to draw a green marble is 9/20 = 0.45. If two marbles are drawn at random without replacement and one at a time, then the probability that one is red and another is blue is 0.25x0