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Anonymous
Lets take the word problem and set it up into a mathematical problem.
Twenty one plus four times twelve: 21 + 4(12).
Always start with parentheses first. 21 + 48.
Now do the addition. 21 + 48 = 69.
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It equals to 8,048
8 8
76
1 and 1third
twelve fifteenths or four fifths