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
how do I do 3(d+12)=8-4d ?
Please! need help!!!!
3 answers
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
what is the answer