Respuesta :

5x - 10 = (195 - (8x + 17)/2

10x - 20 = 195 - 8x - 17

18x = 198

x = 11

m(arc)FH = 8x + 17 = 8(11) + 17 = 88 + 17 = 105

m(arc)EHF = m(arc)EH + m(arc)FH = 195 + 105 = 300