document.write( "Question 559138: A pet shop has a total of 22 animals, all cats and. Birds
\n" ); document.write( "Ther are a total of 60 legs in the pet shop
\n" ); document.write( "How many birds does the pet shop have? \n" ); document.write( "

Algebra.Com's Answer #363315 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+c+\"$ = number of cats
\n" ); document.write( "Let $\"+b+\"$ = number of birds
\n" ); document.write( "given:
\n" ); document.write( "(1) $\"+c+%2B+b+=+22+\"$
\n" ); document.write( "(2) $\"+4c+%2B+2b+=+60+\"$
\n" ); document.write( "Multiply both sides of (1) by $\"+2+\"$ ,
\n" ); document.write( "and subtract (1) from (2)
\n" ); document.write( "(2) $\"+4c+%2B+2b+=+60+\"$
\n" ); document.write( "(1) $\"+-2c+-+2b+=+-44+\"$
\n" ); document.write( " $\"+2c+=+16+\"$
\n" ); document.write( " $\"+c+=+8+\"$
\n" ); document.write( "and, since
\n" ); document.write( "(1) $\"+c+%2B+b+=+22+\"$
\n" ); document.write( "(1) $\"+8+%2B+b+=+22+\"$
\n" ); document.write( "(1) $\"+b+=+22+-+8+\"$
\n" ); document.write( "(1) $\"+b+=+14+\"$
\n" ); document.write( "There are 8 cats and 14 birds
\n" ); document.write( "check:
\n" ); document.write( "(2) $\"+4c+%2B+2b+=+60+\"$
\n" ); document.write( "(2) $\"+4%2A8+%2B+2%2A14+=+60+\"$
\n" ); document.write( "(2) $\"+32+%2B+28+=+60+\"$
\n" ); document.write( "(2) $\"+60+=+60+\"$
\n" ); document.write( "OK \n" ); document.write( "

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