Question

value of x when x minus 1 by 4 x + 1 by 2 x is equal to 80

Answer 1

x-1÷4x+1÷2x=80
x÷4x÷2x= 80+1-1
x÷2x= 80
x= 80

thus your answer is 80

Answer 2

Hey mate,

Here in this case the equation that will form will be
$x - 1 \div 4x + 1 \div 2x = 80$
So, let -1 and 1 go to R.H.S.

$x \div 4x \div 2x = 80 - 1 + 1 \\ so \: x \div 2x = 80 \\ x = 80$
I hope I may have cleared your doubt.... :)