a) 3 × (5 + 3) – 2 × 7 + 1 = 11
b) 3 × 5 + (3 – 2) × 7 + 1 = 23
c) 3 × (5 + 3) – 2 × (7 + 1) = 8
d) (3 × 5 + 3) – (2 × 7 + 1) = 3
e) 3 × 5 + 3 – 2 × 7 + 1 = 5
f) 3 × (5 + 3 – 2) × (7 + 1) = 144
El e) no necesita
Suerte
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a) 3 × (5 + 3) – 2 × 7 + 1 = 11
b) 3 × 5 + (3 – 2) × 7 + 1 = 23
c) 3 × (5 + 3) – 2 × (7 + 1) = 8
d) (3 × 5 + 3) – (2 × 7 + 1) = 3
e) 3 × 5 + 3 – 2 × 7 + 1 = 5
f) 3 × (5 + 3 – 2) × (7 + 1) = 144
El e) no necesita
Suerte