Question

Twice the sum of a number and -2.8 is the same as 4.5 more than the number

Answer 1

Given data:

it is given that twice the sum of a number and -2.8 is the same as 4.5 more than the number​.

Let the required number be 'x', then we have

$\begin{gathered} 2(x-2.8)=x+4.5 \\ 2x-5.6=x+4.5 \\ 2x-x=4.5+5.6 \\ x=10.1 \end{gathered}$

So, the required number is x=10.1