<h3>hello!</h3>
In order to solve a proportion, you should cross-multiply:-

Multiply 3x times 2 and 10 times 3:-

Divide both sides by 6:-

<h3>note:-</h3>
Hope everything is clear; if you need any clarification/explanation, kindly let me know, and I'll comment and/or edit my answer :)
Answer:
I want to say A
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Answer:
If two sides in one triangle are proportional to two sides in another triangle and the included angle in both are congruent, then the two triangles are similar.
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Answer:
all real numbers are solutions
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