document.write( "Question 867073: i just had a math quiz about equivalent expressions. here are two problems i got wrong 4x+3=7 7x-x=7 can u you explain why my answers are not right and help me find correct equivalent expressions? it might help me understand if you use a model or make up a situation. \n" ); document.write( "
Algebra.Com's Answer #522697 by josgarithmetic(39618)![]() ![]() ![]() You can put this solution on YOUR website! No need for a model for this.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Show what you did and identifying the mistake can be done.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "How do you undo everything which was done to x? Whatever you do, do the same to BOTH sides of the equation. \n" ); document.write( "For this equation use these number properties: \n" ); document.write( "(*) ADDITIVE Inverse of 3; \n" ); document.write( "(*) Multiplicative inverse of \n" ); document.write( "I am being technical and not doing the steps for a reason. Can you do the steps?\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "This one is a little different, but just like the way explained and prompted above, how do you undo what was done to x? \n" ); document.write( "(*) Distributive Property but in reverse, meaning factorize the left hand expression; \n" ); document.write( "(*) Simplify one of those left hand expressions; \n" ); document.write( "(*) You should now have a constant multiplied by x. What is the multiplicative inverse of this constant? \n" ); document.write( " |