Question

Gente me ajuda, para agorinha

Answer 1

a)-114+36+72-114-32+81= -71; 3x=-71; x=-71/3
b)38-16-4-16+4+38=44; 4x=44; x=44/4 x=11
c)12x-24x+171-18-9x+304x= 283x+153=19x; 283x-19x+153=0; 264x+153=0; x= -417.