Question

Solve the equation below for d. 0.2(d – 6) = 5 + 0.4d - 3 .

Answer 1

We have the following:

`0.2\mleft(d-6\mright)=5+0.4d-3`

solving for d

`\begin{gathered} 0.2\cdot d-0.2\cdot6=2+0.4d \\ 0.2d-0.4d-1.2=2 \\ -0.2d=2+1.2 \\ d=(3.2)/(0.2) \\ d=-16 \end{gathered}`

Therefore the solution of the equation is -16