September 2018 1 54 Report
Realice los siguientes ejercicios con signos de agrupación
1) 2{ 3( 12 + 35 – 22) - ( 10 – 5)}
2) - { 3 ( 45 - 3 + 25 - 10) + 2 ( 5 – 12) }
3) -3 { 2[ - ( 10 + 2 - 15 + 30) - 4 ( 5 - 6 + 9)] }
4) 5{ 5[ 5 ( - 4 + 15 - 10 ) + 2 ( 12 + 5 – 3)] }

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