On three shelves there are books. On the second shelf is 3 times more, and on the third is 10 books more than on the first shelf 22 books bigger than on the third

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1) Let's choose for the X books on the first shelf, then X +10th it is books on the third shelf, and 3 * (x +10) books on the second shelf: 3 * (X +10)= (the X +10)+22 3X+30=X +32 3X-X=32+30 2X=2 X=2:2 X=1 the book (on the first shelf) 2)1+10=11 books (on the third shelf) 3)3*11=33 books (on the second shelf) (On only three shelves of 45 books).
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