What is the x value?

Step-by-step explanation:

here are instructions to solve this question remember that the sum of all angles in a triangle is 180° and also an angle on a straight line is 180° use this two facts to solve the question

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.

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