How do you solve a problem like this: ½(g+6)=-2g?


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Maurice Korvo Profile
Maurice Korvo answered

You try to get all the numbers on one side of equal sign, and letters on other side. First you must multiple the part in brackets { 1/2(g+6) is equal to 1/2g +1/2(6) which equals 1/2(g)+3 ...

now subtract 3 from each side of the equal sign 1/2g+3-3=-2g-3  then add 2g to each side of the equal sign 1/2g +2g = -3

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Maurice Korvo
Maurice Korvo commented
Its been a long time since I did these the right way. The correct way may be to get unknown (g) on left and answer on right so Get rid of 1/2 by multiply by 2 (g+6=-4g) then add 4g to both sides 4g + g +6=4g-4g 4g+g+6=0 5g+6=0 subtract 6 from both sides 5g=-6 and divide both sides by 5 and you get g=-6/5
Maurice Korvo
Maurice Korvo commented
second last line ran together
4g+g+6=4g-4g. then 4g+g+6=0 then 5g+6=0 then subtract
Claire MotherofPetey
-6/5 is right

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