(12x − 14) − (3x + 9) − (−4 − 1)

= 9x − 18

or

x = 2

Step-by-step explanation:

(12x − 14) − (3x + 9) − (−4 − 1)

= (12x − 14) − (3x + 9) − (−5)

= 12x − 14 − 3x - 9 + 5

= 12x − 3x − 14 - 4

= 9x − 18

or

9x - 18 = 0

9x = 18

x = 18/9

x = 2

answer: standard form is ax^2 + bx + c = 0

step-by-step explanation:

standard form is ax^2 + bx + c = 0

(2x + 1)(x - 2) = 0

distribute to get into standard form

2x^2 - 4x + x - 2 = 0

2x^2 - 3x - 2 = 0

a = 2, b= -3, c = -2

a is your answer

687.09 dollars       happy now

step-by-step explanation: 6870

1857 times .63 equals 1169.91 subtract that from 1857 you get 687.09