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4 years ago

7 - 4 ( d - 3 ) = 23

Mathematics

2 answers:

astra-53 [7]4 years ago

8 0

7 - 4 ( d - 3) = 23

7 - 4d + 12 = 23

Subtract 12 from both sides,

7 - 4d = 11

Subtract 7 to both sides

- 4d = 4

Divide -4 to both sides

d = -1

Anastaziya [24]4 years ago

7 0

First, you have to move the {7} over to the other side.

{7-4(d-3)=23}

{-4(d-3)=16}

Next, divide both sides by {-4}.

{-4(d-3)=16}

{d-3=4}

Last, move {-3} to the other side to get the answer.

{d-3=4}

{d=7}

So, <em>d=7.</em>

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