document.write( "Question 346539: In a triangle ABC, angle B is 4 times angle A and angle C is 15 degrees less than 5 times angle A. Find the size of the angles. \n" ); document.write( "

Algebra.Com's Answer #247786 by Fombitz(32388) $\"\"$ $\"About$

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For any triangle,
\n" ); document.write( " $\"A%2BB%2BC=180\"$
\n" ); document.write( "Substituting,
\n" ); document.write( " $\"A%2B%284A%29%2B%285A-15%29=180\"$
\n" ); document.write( " $\"10A-15=180\"$
\n" ); document.write( "Solve for $\"A\"$ , then go back and solve for $\"B\"$ and $\"C\"$ . \n" ); document.write( "

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