Question

Twice a number divid by 6 is 42

Answer 1

A number=x

2x/6=42
2x=252 by multiplying both sides by 6
x=126 by dividing both sides by 2 to isolate the variable

Answer 2

Let’s call this number ‘n’.

Twice a number is 2n.

2n / 6 = 42

2n = 252

n = 126.