# What equation means that 7 less than twice a number is -1?

Apr 6, 2018

$2 n - 7 = - 1$

Apr 6, 2018

Let the number be $x$. So, ATQ, the required equation is

$2 \left(x\right) - 7 = - 1$

$2 x = 6$

Therefore,

$x = 3$

#### Explanation:

1 step
Twice a number is $2 \times x$

2 step
$7$ less than means $2 \times x - 7$

3 step
Finally, now the equation is

$2 x - 7 = - 1$