Question

5+{2+[3+2+2(5+1)-7]+4} =


5-{2-[3+2-(5+1)-7]+4} =


15+{7+[3+9-3(2+1)]+4} =


Me podrían ayudar

Answer 1

Explicación paso a paso:

5+{2+[3+2+2(5+1)-7]+4}

5 + (2 + (3 + 2 + 2 × 6 - 7) + 4)

5 + (2 + (3 + 2 + 12 - 7) + 4)

5 + (2 + 10 + 4)

5 + 16

R//: 21

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5-{2-[3+2-(5+1)-7]+4}

5 - (2- 3 (3 + 2 - 6 - 7) + 4)

5 - (2- (-8) +4)

5- (2 + 8 + 4)

5 - 14

R//: -9

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15+{7+[3+9-3(2+1)]+4}

15 + (7 + (3 + 9 - 3 × 3) + 4)

15 + (7+ (3 + 9 - 9) + 4)

15+ (7 + 3 + 4)

15 + 14

R//: 24