(1)设这个数为x, 1 7 x+100× 1 4 =37, 1 7 x+25=37, 1 7 x+25-25=37-25, 1 7 x=12, 1 7 x÷ 1 7 =12÷ 1 7 , x=84.答:这个数是84.