Question

Which value of d is a solution to equation 2.2d + 5.4= 12

Answer 1

your answer is d=3

Explanation:

First you subtract 5.4 from 12 then with that answer (6.6) you are going to divide 6.6 and 2.2 and your final answer is d=3

Answer 2

Hello!

Answer:

d=3

*The answer must have a positive sign.*

Explanation:

Distributive property: a(b+c)=ab+ac

First, you multiply by 10 from both sides of an equation.

`2.2d*10+5.4*10=12*10`

Then, you had to refine the problem down.

`22d+54=120`

Next, you subtract by 54 from both sides of an equation.

`22d+54-54=120-54`

Simplify.

`22d=66`

You can also divide by 22 from both sides of an equation.

`(22d)/(22)=(66)/(22)`

And finally, simplify and solve. You can also divide by the numbers.

`66/22=3`

Final answer: →
`d=3`

Hope this helps!

Thanks!

-Charlie

Have a great day!

:)

:D