7(3-1)-3 [1-2(2)]-2(4+1)(2+1)
=(7)(2)−3(1−(2)(2))−2(4+1)(2+1)
=14−3(1−(2)(2))−2(4+1)(2+1)
=14−3(1−4)−2(4+1)(2+1)
=14−(3)(−3)−2(4+1)(2+1)
=14−(−9)−2(4+1)(2+1)
=23−2(4+1)(2+1)
=23−(2)(5)(2+1)
=23−10(2+1)
=23−(10)(3)
=23−30
=−7
Respuesta: -7
saludos!:p
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La jerarquía es el estricto orden en el que se resuelve una operación:
7(3-1)-3 [1-2(2)]-2(4+1)(2+1)
=(7)(2)−3(1−(2)(2))−2(4+1)(2+1)
=14−3(1−(2)(2))−2(4+1)(2+1)
=14−3(1−4)−2(4+1)(2+1)
=14−(3)(−3)−2(4+1)(2+1)
=14−(−9)−2(4+1)(2+1)
=23−2(4+1)(2+1)
=23−(2)(5)(2+1)
=23−10(2+1)
=23−(10)(3)
=23−30
=−7
Respuesta: -7
saludos!:p