There are three 4's in 12, as 12 divided by 4 equals 3. Therefore, you can fit three groups of 4 into 12.
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Bring all the unknown values to one side and the known values to the other 7s - 12 = 3s - 4 Subtract 3s from both sides 7s - 3s - 12 = 4 4s - 12 = 4 Add 12 to both sides 4s = 4 + 12 4s = 16 Divide both sides by 4 s = 4
4.56
four and a half
8*4 = 32 of them
75/4 = 18.75