d) $6 x+1=4 x+57$
\(\boxed{x = 28}\)
Step 1 :Subtract 4x from both sides of the equation: \(6x - 4x + 1 = 4x - 4x + 57\)
Step 2 :Simplify the equation: \(2x + 1 = 57\)
Step 3 :Subtract 1 from both sides: \(2x = 56\)
Step 4 :Divide both sides by 2: \(x = \frac{56}{2}\)
Step 5 :\(\boxed{x = 28}\)