Respuesta :

10h +12=8h+4
Subtract 4 from both sides
10h+8=8h
SUbtract 10h from both sides
8=-2h
Divide both sides by negative 2
h=-4
  12 + 10h = 8h + 4
 12 + 10h = 4 + 8h
12 + 10h = 4 + 8h

    12 + 10h + -8h = 4 + 8h  10h + -8h = 2h 12 + 2h = 4 + 8h + -8h
  8h + -8h = 0 12 + 2h = 4 + 0 12 + 2h = 4
 12 + -12 + 2h = 4 + -12
 12 + -12 = 0 0 + 2h = 4 + -12 2h = 4 + -12
  4 + -12 = -8 2h = -8
 h= -4
 h = -4