Graphic algebra problems. Hard

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icecream.png + 3 = 17 + 3 - ball with shadow.png
2 = 28 + 1 - 3 x slippers.png
icecream.png - 3 = 23 - 2 - 2 x ball with shadow.png
Can you calculate the value of each of the elements?
slippers.png =
ball with shadow.png =
icecream.png =