LARGO: 5×18-6-12÷4 = 90-6-3 = 81
ANCHO: [25-(-7)]÷8 = (25+7)/8 = 32/8 = 4
perímetro: 2(81)+2(4)=162+8=170
área: (81)(4) = 324
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LARGO: 5×18-6-12÷4 = 90-6-3 = 81
ANCHO: [25-(-7)]÷8 = (25+7)/8 = 32/8 = 4
perímetro: 2(81)+2(4)=162+8=170
área: (81)(4) = 324