Respuestas

2012-09-13T00:24:47+02:00

a) 38 ab - ( - 8 ab )=38ab+8ab=46ab

b) - 17x - ( - 3 x )=-17x+3x=-14x

c)- 8cg2 - ( 16 cg2 ) =- 8cg2 - 6 cg2 =-24cg2