[R] solve scalar linear equation

[message]

Readers,

The function 'solve' states that it is applicable to a vector or matrix 
object.

Please what is the syntax to solve a very simple equation like:

5x + 1 = 56

The books read so far give explanations for simultaneous linear 
equations or differential equations, but there have not been able to 
find a very basic description to solve simple equations (as an initial 
learning stage). Thanks.