Question

solve equation 4.3d+7.5=5.8d

Answer 1

Hi!

To solve, first subtract 4.3d from both sides.
4.3d-4.3d+7.5=5.8d-4.3d
7.5=1.5d

Divide by 7.5 on both sides.
7.5/1.5=1.5d/1.5
5 = d

The answer is d = 5

Hope this helps! :)

Answer 2

4.3d + 7.5 = 5.8d

We're essentially just trying to get (d) by itself.

So, in order for us to get (d) by itself, we have to :

Subtract 7.5 from both sides.

4.3d = 5.8d - 7.5

Then, we have to subtract 5.8d from both sides.

4.3d - 5.8d = -7.5

Simplify.

-1.5d = -7.5

Then, you have to divide both sides by -1.5

-1.5 ÷ -1.5d = -7.5 ÷ -1.5

Simplify.

d = 5

Check your work.

To check your work, simply plug in 5 for (d) in the original equation.

4.3d + 7.5 = 5.8d

4.3(5) + 7.5 = 5.8(5)

Simplify.

21.5 + 7.5 = 29

Simplify.

29 = 29

Therefore, d = 5

~Hope I helped!~