October 2023 1 13 Report
4. Resuelve las siguientes expresiones
a. -21 – (- 7) + 4 × (- 7) – 12 =
b. -5 + 7 - ( 3 + 2 × (- 3) =
c. 12 – 36 + 15 × (-3) - 6 × (-9) =
d. [- 23 + ( 2 × ( - 8) - 5) + 12] – 15 =
e. [ 12 × ( - 3) + 8 – 12 – (- 6+2)] + 2 =
f. (- 2) × 5 × (- 3) × (- 5) × (- 6) =

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