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You said: 12 + 0.5(x + 8) = 40

Subtract 12 from each side:

0.5 (x + 8) = 28

Multiply each side by 2:

x + 8 = 56

Subtract 8 from each side:

x = 48

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Q: When 12 is added to half the sum of a number and 8 the result is 40 What is the number?
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