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A= 2mp-[mp-3mp+mp)]
A= 2mp-[-3mp]= 2mp+3mp= 5mp
B = -mp - (mp - 4mp) = -mp-mp+4mp = 2mp
A+B= 8mp+2mp= 7mp
2. De : (4x - 7y + 3) restar (-3x - 7y + 2)
(4x - 7y + 3) - (-3x - 7y + 2)
4x-7y+3+3x+7y-2
7x+1
Espero que ta haya servido.