document.write( "Question 252089: Can I please get help on this word problem? The sum of two numbers is 46. Four times one number is 4 more than twice the other number. Find the numbers. So far I have tried many times but always end up with an impossible answer. One thing I have tried is, 4x + 2x + 4 = 6(42). But I always end up getting 41 and 1/3. Can you please teach me how to do this problem? \n" ); document.write( "
Algebra.Com's Answer #183842 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! First we have two unknowns and need two equations. \n" ); document.write( "The first thing we learn is the two numbers add up to 46 \n" ); document.write( "n+m=46 \n" ); document.write( "Now the next part is a bit hard to understand so lets break it down. \n" ); document.write( "(four times one number)4n \n" ); document.write( "It doesn't matter at this point which one- n or m will do. \n" ); document.write( "so I choose n \n" ); document.write( "then it says that 4n is (means =} 4 more (4+ )than twice the other number 2m\r \n" ); document.write( "\n" ); document.write( "4n=4+2m \n" ); document.write( "so now we have our two equations in two unknowns \n" ); document.write( "n+m=46 \n" ); document.write( "4n=4+2m \n" ); document.write( "solve the first one for either m or n it doesn't matter \n" ); document.write( "n=46-m \n" ); document.write( "or \n" ); document.write( "m=46-n \n" ); document.write( "just choose one and stick with it all the way \n" ); document.write( "4n=4+2m \n" ); document.write( "every time we see n in the above equation we will put 46-m \n" ); document.write( "4(46-m)=4+2m \n" ); document.write( "now we have one equation with one unknown \n" ); document.write( "so now we just have bring everything together and combine and get the all the m's on one side and all the numbers on the pother\r \n" ); document.write( "\n" ); document.write( "first let's multiply out \n" ); document.write( "4*46-4m=4+2m \n" ); document.write( "add 4 m to both sides \n" ); document.write( "4*46=4+6m \n" ); document.write( "4*45+4*1=4*1+6m \n" ); document.write( "subtract 4*1 from both sides \n" ); document.write( "4*45=6m \n" ); document.write( "(2*2)*(3*15) \n" ); document.write( "2*3*2*15=6m \n" ); document.write( "6*30=6m \n" ); document.write( "divide by 6 \n" ); document.write( "30=m \n" ); document.write( "46-m=n \n" ); document.write( "46-30=n \n" ); document.write( "16=n \n" ); document.write( "so far so good \n" ); document.write( "now we go back to the second equation and check our work \n" ); document.write( "4n=4+2m \n" ); document.write( "4*16=4+2(30) \n" ); document.write( "64=64 \n" ); document.write( "ok \n" ); document.write( " \n" ); document.write( " |