document.write( "Question 176116: -4x-15=5y
\n" ); document.write( "2y=11-5x \n" ); document.write( "

Algebra.Com's Answer #131224 by jojo14344(1513) $\"\"$ $\"About$

You can put this solution on YOUR website!
\r
\n" ); document.write( "\n" ); document.write( " $\"-4x-15=5y\"$ , EQN 1
\n" ); document.write( " $\"2y=11-5x\"$ , EQN 2
\n" ); document.write( "In EQN 1 we get,
\n" ); document.write( " $\"y=%28-4x-15%29%2F5=%28-4%2F5%29x-%2815%2F5%29\"$
\n" ); document.write( " $\"y=%28-4%2F5%29x-3\"$ , EQN 3------> subst. in EQN 2:
\n" ); document.write( " $\"2%28%28-4%2F5%29x-3%29=11-5x\"$
\n" ); document.write( " $\"%28-8%2F5%29x-6=11-5x\"$
\n" ); document.write( " $\"%28-8%2F5%29x%2B5x=11%2B6\"$
\n" ); document.write( " $\"%28-8x%2B25x%29%2F5=17\"$ , cross multiply
\n" ); document.write( " $\"17x=85\"$ ----> $\"cross%2817%29x%2Fcross%2817%29=cross%2885%295%2Fcross%2817%29\"$
\n" ); document.write( " $\"highlight%28x=5%29\"$ , subst. in EQN 2:
\n" ); document.write( " $\"2y=11-5x\"$ ---> $\"y=%2811-5x%29%2F2=%28-5%2F2%29x%2B%2811%2F2%29\"$
\n" ); document.write( " $\"y=%28-5%2F2%29%285%29%2B%2811%2F2%29=%28-25%2F2%29%2B%2811%2F2%29=-14%2F2\"$
\n" ); document.write( " $\"highlight%28y=-7%29\"$
\n" ); document.write( "See graph:
\n" ); document.write( "--->POINT of intersection (5,-7); RED,>>> EQN 1, GREEN,>>> EQN 2
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo
\n" ); document.write( " \n" ); document.write( "

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