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Math Games answers 1a

This is the answer to the Math Games problem 1a

The blanks should be filled with 2.

A + B = D

A - B = C

D - C = E

A	B	C	D	E
6	1	5	7	2
5	1	4	6	2
4	2	2	6	4
3	2	1	5	4
4	1	3	5	2

A + B = D

• 6 + 1 = 7
• 5 + 1 = 6
• 4 + 2 = 6
• 3 + 2 = 5
• 4 + 1 = 5

A - B = C

• 6 - 1 = 5
• 5 - 1 = 4
• 4 - 2 = 2
• 3 - 2 = 1
• 4 - 1 = 3

D - C = E

• 7 - 5 = 2
• 6 - 4 = 2
• 6 - 2 = 4
• 5 - 1 = 4
• 5 - 3 = 2

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