How do you find the value of x with 98 & 50?

Assuming this has something to do with the interior angles of a  triangle?

98 + 50 + x = 180, add 98 and 50.

148 + x = 180, subtract 148 from both sides.

x = 32

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it