Let the number be x and so the expression is: 12+x/2
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half of 12 is 6.
The number 2.
You said: 12 + 0.5(x + 8) = 40Subtract 12 from each side:0.5 (x + 8) = 28Multiply each side by 2:x + 8 = 56Subtract 8 from each side:x = 48
Yes, it is.
18