Introducción al algebraOnline version Regla de signos para la suma y resta. by Camen Cristóbal 1 -5a+3b-2c+8a-5c a 3a+3b-7c b -3a+3b-7c c -3a-3b+7c d 3a+3b+7c 2 -8mx+7ma+3m-2ma+4mx a -4mx+5ma+3m b 4mx-5ma+3m c 4mx-5ma-3m d -4mx+5ma 3 -15pq+8pm+23pr-(-45pq+15pm-15pr) a -30pq+7pm+38pr b 30pq-7pm+38pr c -30pq-7pm+38pr d 30pq+7pm+38pr 4 -(ab-ax+bx)-(5ab+7ax-3bx) 5 -(ab-ax+bx)-(5ab+7ax-3bx) a 6ab+6ax+2bx b -6ab-6ax+2bx c 6ab-6ax+2bx d -6ab-6ax-2bx 6 5xz+10xy-7xz-(-3xz-2xy+8xz) a -8xz+12xy-15xz b 8xz-12xy-15xz c 8xz+12xy-15xz d 8xz-12xy-15xz 7 15xy+5xz+4yz+(3xy-5xz)-(-4xz+3yz) a 18xy+4xz+yz b -18xy+4xz+yz c 18xy-4xz+yz d 18xy+4xz-yz 8 3ab-5a+8ab+4a-6ab+3a a 5ab+2a b -5ab+2a c 5ab-2a d -5ab-2a 9 6xy-4xz+8yz-(-4xy+3xz+2yz) a 2xy-7xz+6yz b 2xy-4xz-6yz c 10xy+7xz+6yz d 10xy-7xz+6yz 10 -(2p+5x-3r)-2p-5x+3r a 0p+0x+0r b -4p+10x-6r c -4p-10x+6r d -4p+10x+6r