Explantion:

equation:

Solution

Explantion:

equation:

Solution

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Westford, MA

3 C + 8 = 7 C + 4

Take away 3 C from both sides:

8 = 4 C + 4

Take away 4 cubes from both sides:

4(1) = 4 C

So each cup must hold 1 cube.

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