document.write( "Question 98822: okay heres my problem ive tried to solve it but it keeps coming out wrong....\r
\n" );
document.write( "\n" );
document.write( "18x - (8x - 7) = 67\r
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( "and also this one....\r
\n" );
document.write( "\n" );
document.write( "11 ( 4 - 6y) + 5 ( 13y + 11) = 9 \n" );
document.write( "
Algebra.Com's Answer #71916 by doukungfoo(195)![]() ![]() You can put this solution on YOUR website! Ok first use the Distributive Property to get rid of the parentheses so \n" ); document.write( "18x - (8x - 7) = 67 \n" ); document.write( "multiply -1 times 8x and -1 times -7 to get \n" ); document.write( "18x - 8x + 7 = 67 \n" ); document.write( "Now combine like terms \n" ); document.write( "10x + 7 = 67 \n" ); document.write( "Next subtract 7 from both sides of the equal sign \n" ); document.write( "10x + 7 - 7 = 67 - 7 \n" ); document.write( "10x = 60 \n" ); document.write( "Finally to solve for x divide each side of the equal sign by 10 \n" ); document.write( "10x/10 = 60/10 \n" ); document.write( "x = 6 \n" ); document.write( "To check just plug 6 into the original equation \n" ); document.write( "----------------------------------------------------------------------------- \n" ); document.write( "The second problem also starts the Distributive Property \n" ); document.write( "11 ( 4 - 6y) + 5 ( 13y + 11) = 9 \n" ); document.write( "First 11 is multiplied by 4 and -6y \n" ); document.write( "44 - 66y + 5 ( 13y + 11) = 9 \n" ); document.write( "Then 5 is multiplied by 13y and 11 \n" ); document.write( "44 - 66y + 65y + 55 = 9 \n" ); document.write( "Now combine like terms \n" ); document.write( "99 - 1y = 9 \n" ); document.write( "add 1y to both sides \n" ); document.write( "99 -1y + 1y = 9 + 1y \n" ); document.write( "99 = 9 + y \n" ); document.write( "subtract 9 from both sides \n" ); document.write( "99 - 9 = 9 - 9 + y \n" ); document.write( "90 = y \n" ); document.write( " |