Find the missing number in the proportion.
12 6
___=____
x+7 7
To find the missing number, we can use the property of proportions where the cross-products are equal.
We can set up the proportion as follows:
12/(x+7) = 6/7
Now we can solve for x. To do this, we can cross-multiply:
12 * 7 = 6 * (x+7)
84 = 6x + 42
Next, we can subtract 42 from both sides:
84 - 42 = 6x
42 = 6x
Finally, we can divide both sides by 6 to solve for x:
42/6 = x
7 = x
Therefore, the missing number in the proportion is x = 7.