Asked by Emi
how do I do 3(d+12)=8-4d ?
Please! need help!!!!
Please! need help!!!!
Answers
Answered by
Emma
Fist you use the distributive property method.
3(d+12)=8-4d
3d+36=8-4d
Subtract 8 from each side
3d+28=-4d
Subtract 3d from both sides
28=-7d
divide by -7 from each side
?= d
3(d+12)=8-4d
3d+36=8-4d
Subtract 8 from each side
3d+28=-4d
Subtract 3d from both sides
28=-7d
divide by -7 from each side
?= d
Answered by
?
when you are doing the last step from the above answer do the following
28=-7d
-(-7)=-(-7)
?=d
for the 28-(-7) do KCS K:keep C:change S:swap
your going to keep the 28 change the - to a + and swap -7 for its opposite.
your problem should then be 28+7 do this problem (28+7=35) then back to the original problem you see which one has the greatest absolute value and that tells you if it is negative or positive
28=-7d
-(-7)=-(-7)
?=d
for the 28-(-7) do KCS K:keep C:change S:swap
your going to keep the 28 change the - to a + and swap -7 for its opposite.
your problem should then be 28+7 do this problem (28+7=35) then back to the original problem you see which one has the greatest absolute value and that tells you if it is negative or positive
Answered by
parrish
what is the answer
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