OpenStax, Intermediate Algebra 2e §4.4 Solve Systems of Equations with Three Variables · Exercise 30 · Algebra · Systems
Solve Systems of Equations with Three Variables · Exercise 30
Solve the given problem.
The sum of the measures of the angles of a triangle is 180. The sum of the measures of the second and third angles is three times the measure of the first angle. The third angle is fifteen more than the second. Find the measures of the three angles.
OpenStax, Intermediate Algebra 2e · §4.4 Solve Systems of Equations with Three Variables · Exercise 30
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