document.write( "Question 404792: M+3(m-4)=16 Now I know the answer is m=7 because my sister told me but I need to know how She came up with that now she did say m is 1 I am confused can you help me \n" ); document.write( "
Algebra.Com's Answer #286060 by IWork4Dessert(60)![]() ![]() You can put this solution on YOUR website! The most important thing to remember here is PEMDAS. Its the order of equations acronym.\r \n" ); document.write( "\n" ); document.write( "PEMDAS \n" ); document.write( "P: parentheses \n" ); document.write( "E: exponents \n" ); document.write( "M: multiplication \n" ); document.write( "D: division \n" ); document.write( "A: addition \n" ); document.write( "S: subtraction\r \n" ); document.write( "\n" ); document.write( "If you start solving the equation in that order, you'll be fine. Here's how you do it. \r \n" ); document.write( "\n" ); document.write( "m+3(m-4)=16 \n" ); document.write( "Now you distribute the 3 throughout the parentheses(P). Multiply both things inside the parentheses by the number on the outside. \n" ); document.write( "m+(3m-12)=16 \n" ); document.write( "You don't need the parentheses anymore since you've finished distributing. \n" ); document.write( "m+3m-12=16 \n" ); document.write( "Since you have two \"m\" variables in your equation, you can combine them. Just add them together. \n" ); document.write( "4m-12=16 \n" ); document.write( "You can now add that \"-12\" to the other side. You want to isolate the variable, the letter, on one side, so you can solve for it. \n" ); document.write( "4m-12=16 \n" ); document.write( " +12 +12 \n" ); document.write( "4m=28 \n" ); document.write( "Now you divide both sides by the number next to the variable, to get rid of it. \n" ); document.write( "4m=28 \n" ); document.write( "÷4 ÷4 \n" ); document.write( "And there's your answer. \n" ); document.write( "m=7 \n" ); document.write( " |