hunterbrown13 hunterbrown13 17-12-2021 Mathematics contestada In ΔRST, m ∠ R = ( 5 x + 15 ) ∘ m∠R=(5x+15) ∘ , m ∠ S = ( 6 x + 8 ) ∘ m∠S=(6x+8) ∘ , and m ∠ T = ( 4 x + 7 ) ∘ m∠T=(4x+7) ∘ . What is the value of x ? x?