Use the drop-down menus to choose steps in order to correctly solve 6n+9=−3n−21−6 for n.

6n + 9 = -3n + -21 + -6

Reorder the terms:

9 + 6n = -21 + -6 + -3n

Combine like terms: -21 + -6 = -27

9 + 6n = -27 + -3n

Solving

9 + 6n = -27 + -3

Add '3n' to each side of the equation.

9 + 6n + 3n = -27 + -3n + 3n

Combine like terms: 6n + 3n = 9n

9 + 9n = -27 + -3n + 3n

Combine like terms: -3n + 3n = 0

9 + 9n = -27 + 0

9 + 9n = -27

Add '-9' to each side of the equation.

9 + -9 + 9n = -27 + -9

Combine like terms: 9 + -9 = 0

0 + 9n = -27 + -9

9n = -27 + -9

Combine like terms: -27 + -9 = -36

9n = -36

Divide each side by '9'.

n = -4

Simplifying

n = -4

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation:

if the probability is 1/12, 75 people will receive a $25 gift card

step-by-step explanation: