document.write( "Question 562152: Make a two column proof to prove that x=-1 if 5(3-2x)=28+3x \n" ); document.write( "
Algebra.Com's Answer #364466 by richard1234(7193)![]() ![]() You can put this solution on YOUR website! We want to prove that if 5(3-2x) = 28+3x, then x = 1 (note the conditional).\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5(3-2x) = 28+3x <--> Given\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "15-10x = 28+3x <--> multiplication is distributive over addition/subtraction\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-13 = 13x <--> addition property of equality (I applied this twice for sake of space)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-1 = x <--> division property of equality \n" ); document.write( " |