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

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Answer 1 · 2018-04-06T14:32:43

$2 n - 7 = - 1$ $2n-7=-1$

Answer 2 · 2018-04-06T14:35:01

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

$2 (x) - 7 = - 1$ $2(x) - 7 = -1$

$2 x = 6$ $2x = 6$

Therefore,

$x = 3$ $x = 3$

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

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

3 step
Finally, now the equation is

$2 x - 7 = - 1$ $2x - 7 = -1$