Question

Simplify the following expression. 7d + 12 – 4d – 3

Answer 1

we can solve this by first combining like terms: our like terms in this equation are d and plain numbers

so, this means that we can combine the d's with the d's and the plain numbers with the plain numbers

so,

7d + 12 - 4d - 3 = 0

3d+ 9 = 0

next, we have to get our plain numbers on one side of the equal sign, and our numbers with the d's on the other side of the equal sign: we do this by doing the opposite of what the number is doing on the side it is on, since the 9 is being subtracted from the left hand side, we will subtract it from both sides:

3d = -9

next, we want to get rid of the 3 next to the d

to do this, we would divide the 3 on both sides since it is being multiplied to the d on the left hand side:

d = -3

this is our final answer: d = -3

Answer 2

Hello!

$7d + 12 -4d -3$

Explanation:

↓↓↓↓↓↓↓↓↓↓↓

First this problem it should be the group like terms.

$7d-4d+12-3$

Then you add similar elements.

$7d-4d=3d$

$3d+12-3$

You can also add or subtract by the numbers.

$12-3=9$

$=3d+9$

Answer⇒⇒⇒3d+9

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-Charlie