7 - 4 (d - 3) = 23

Question

Mathematics

Alfredo

25 December, 11:20

7 - 4 (d - 3) = 23

+3

Answers (2)

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Gaven Hatfield · Answer 1

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

Josephine · Answer 2

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, d=7.