document.write( "Question 170430This question is from textbook Mathematics 9
\n" ); document.write( ": The sum of 3 numbers is 33. The 2nd number is 7 less than the 1st, and the 3rd is three times the second. What are the numbers? \n" ); document.write( "

Algebra.Com's Answer #125829 by Mathtut(3670) $\"\"$ $\"About$

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lets call the 3 numbers a, b, and c
\n" ); document.write( ":
\n" ); document.write( "a+b+c=33...eq 1
\n" ); document.write( "b=a-7......eq 2
\n" ); document.write( "c=3b.......eq 3---->c=3(a-7)---->c=3a-21
\n" ); document.write( ":
\n" ); document.write( "take b's value in eq 2 and c's value in eq 3 and plug them into eq 1
\n" ); document.write( ":
\n" ); document.write( "a+(a-7)+(3a-21)=33
\n" ); document.write( ":
\n" ); document.write( "5a=61
\n" ); document.write( ":
\n" ); document.write( " $\"a=61%2F5\"$
\n" ); document.write( " $\"b=61%2F5-35%2F5=26%2F5\"$
\n" ); document.write( " $\"c=3%2826%2F5%29=78%2F5\"$ \n" ); document.write( "

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