How do i simplify these two equations?
10w - 2(3w + 4) + 4
12x - (7y - 8x) + 4x -11y

Step-by-step explanation:

10w - 2(3w + 4) + 4 = 10w + (-2)*3w + (-2)*4 + 4

                              = 10w - 6w - 8 + 4

                             = 4w - 4

12x - (7y - 8x) + 4x - 11y = 12x - 7y + 8x +4x -11y

                                    = 12x + 8x + 4x - 7y - 11y

                                    = 24x - 18y

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870

$119.20

step-by-step explanation:

$372.50 - 60% off is $149. $149-20% off is $119.20