On one scarf there are 3 hanks of wool, and on one cap - 2 hanks. How many hanks of such wool will go to 7 scarfs and 7 caps? Solve a problem in two ways

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1 way: 1) 3*7=21 scarfs. 2) on caps. 3) 21+14=35-will be spent for 7 caps and 7 scarfs. 2 way : 1)3+2=5 hanks will be spent both for a scarf and for a cap. 2) 5*7+35-will be spent for 7 caps and 7 scarfs.
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Answer add