Solve for x: the angles of a triangle
The three angles add to 180°. Write an equation, combine like terms, and solve for x.
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The angles of a triangle are (2x + 2)°, (x + 4)° and (3x + 12)°. Find x.
Answer: 27
The angles of a triangle are (2x + 15)°, (2x + 5)° and (2x − 2)°. Find x.
Answer: 27
The angles of a triangle are (2x − 7)°, (3x + 9)° and (2x − 32)°. Find x.
Answer: 30
Tip: The three angles add to 180°. Write an equation, combine like terms, and solve for x.
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