Solve for x. 8 - 3x - x += 12 (a) -1 (b) -2 (c) -5 (d) -10

Simplifying

8 + -3x + -1x = 12

Combine like terms: -3x + -1x = -4x

8 + -4x = 12

Solving

8 + -4x = 12

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-8' to each side of the equation.

8 + -8 + -4x = 12 + -8

Combine like terms: 8 + -8 = 0

0 + -4x = 12 + -8

-4x = 12 + -8

Combine like terms: 12 + -8 = 4

-4x = 4

Divide each side by '-4'.

x = -1

Simplifying

x = -1

Please mark brainliest if I helped!

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

depends on how many days you are talking about

step-by-step explanation: