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The sum of the measures of the interior angles of the triangle is 180°. Write and solve an equation to find the value of the variable.

 

 Apr 13, 2020
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3x + 44 + (x + 20)  =  180

  3x + 44 + x + 20  =  180

                4x + 64  =  180                                    (simplify)

                        4x  =  116                                    (subtract 64 from both sides)

                          x  =  29                                      (divide by 4)

 Apr 13, 2020

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