ben is solving the equation 5x-1=19 he says that 1st he will subtract 1 from both sides then multiply both by 5 explain ben error and solve for the correct answer for x

Ben's error is that he should have followed the correct order of operations. The correct order of operations states that we should perform any multiplication or division before addition or subtraction.

To solve the equation correctly, we should first perform the subtraction on both sides of the equation.

Starting with the equation: 5x - 1 = 19

Subtracting 1 from both sides gives us: 5x = 20

Now, to find the value of x, we need to divide both sides of the equation by 5.

Dividing both sides by 5 gives us: x = 4

Therefore, the correct solution for x is 4.