Question 991533
I'm not sure I understand the question,
and this may get messy.
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x=number to subtract
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{{{(13-x)/(22-x)=(17-x)/(32-x)}}} Cross-multiply
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{{{(13-x)(32-x)=(17-x)(22-x)}}}
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{{{x^2-45x+416=x^2-39x+374}}}
{{{-45x+416=-39x+374}}}
{{{-6x+416=374}}}
{{{-6x=-42}}}
{{{x=7}}}
ANSWER: The number is 7
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CHECK:
{{{(13-x)/(22-x)=(17-x)/(32-x)}}}
{{{(13-7)/(22-7)=(17-7)/(32-7)}}}
{{{6/15=10/25}}}
{{{2/5=2/5}}}