Begin by cross-multiplying.

Distribute the on the left side and expand the polynomial on the right.

Combine like terms and rearrange to set the equation equal to zero.

Now we can isolate and solve for by adding to both sides.

First, use the distributive property to simplify the right side of the equation. This gives you

Then, subtract and add to both sides of the equation to get .

Simplify the right side:

Isolate x:

To solve for , isolate it from the other variables. First, subtract from both sides to get

.

Then, divide both sides by to get

Let a variable represent the smallest number in the set. Every consecutive number after the first number will be one unit greater than the other. Then, the four numbers that sum up to 98 are:

where every term in parenthesis represents a number. Add and solve for .

The smallest number is , and the largest number is . Therefore:

The correct answer is:

To find the solution to this equation you must completely isolate x.

Start by dealing with the parenthesis first. Distribute the 25:

Combine the x terms and move the constant over:

Finally divide the constant away from x to solve:

Here, . Plug these values in and simplify.

Start with the numerator first:

Then do the same in the denominator:

Finally, combine the two results to find the solution:

First, use the distributive property to simplify the right side of the equation:

Then, add and subtract from both sides to get

Finally, divide both sides by to get .

To solve for , you must isolate it from the other variables. Start by adding to both sides to give you . Now, you need only to divide from both sides to completely isolate . This gives you a solution of .