hard Set 1 Form Exercise

[1 + ?] = 7

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Answer: 6

Lhs
  • 1
  • ?
Rhs
7

[?] = 12

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Answer: 12

Lhs
  • ?
Rhs
12

[4 + ?] = 9

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Answer: 5

Lhs
  • 4
  • ?
Rhs
9

[1 + 3 + ?] = 21

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Answer: 17

Lhs
  • 1
  • 3
  • ?
Rhs
21

[1 + 2 + ?] = 6

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Answer: 3

Lhs
  • 1
  • 2
  • ?
Rhs
6

[4 + 2 + ?] = 33

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Answer: 27

Lhs
  • 4
  • 2
  • ?
Rhs
33

[1 + 3 + ?] = 20

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Answer: 16

Lhs
  • 1
  • 3
  • ?
Rhs
20

[12 + ?] = 27

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Answer: 15

Lhs
  • 12
  • ?
Rhs
27

[10 + ?] = 27

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Answer: 17

Lhs
  • 10
  • ?
Rhs
27

[?] = 4

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Answer: 4

Lhs
  • ?
Rhs
4

[2 + 2 + ?] = 8

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Answer: 4

Lhs
  • 2
  • 2
  • ?
Rhs
8

[8 + 10 + ?] = 32

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Answer: 14

Lhs
  • 8
  • 10
  • ?
Rhs
32

[?] = 30

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Answer: 30

Lhs
  • ?
Rhs
30

[?] = 11

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Answer: 11

Lhs
  • ?
Rhs
11

[7 + ?] = 22

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Answer: 15

Lhs
  • 7
  • ?
Rhs
22

[?] = 4

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Answer: 4

Lhs
  • ?
Rhs
4

[?] = 33

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Answer: 33

Lhs
  • ?
Rhs
33

[7 + 1 + ?] = 26

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Answer: 18

Lhs
  • 7
  • 1
  • ?
Rhs
26

[8 + 8 + ?] = 26

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Answer: 10

Lhs
  • 8
  • 8
  • ?
Rhs
26

[?] = 22

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Answer: 22

Lhs
  • ?
Rhs
22