Question 1012032
x = y-1
4y - 3(y-1) = 20
4y - 3y + 3 = 20
y = 17
x = 16
length of hole is 16 cm and length of metal sheet is 17 cm
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check our answer
4*17 - 3*16 = 20
68 - 48 = 20
20 = 20
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