Question

The sum of 5 times a number and minus −​2, plus 7 times a​ number

Answer 1

Answer:

12x + 2

Step-by-step explanation:

Let the number be represented by x.

Then five times the number = 5*x

Seven times the number = 7*x

Sum of 5 times the number minus -2 = $\[5*x - (-2)\]$ = $\[5x +2\]$

Adding seven times the number to this expression yields, $\[5x+2+7x\]$

$\[= (5+7)x+2\]$

$\[= 12x+2\]$

So the simplified expression corresponds to 12x + 2.