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Solve for x in the diagram

Solve for x in the diagram-example-1

1 Answer

3 votes

Answer:

x=12

Explanation:

The two angles shown are complementary angles, so the add to 90 degrees

x+42 + 3x = 90

Combine like terms

4x+42 = 90

Subtract 42 from each side

4x+42-42 = 90-42

4x = 48

Divide by 4

4x/4 = 48/4

x = 12

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