Solve the following equation:
21 - x = 4x - 4
X =
What is X

5

Step-by-step explanation:

21 - x = 4x - 4

25 - x = 4x

25 = 5x

25/5

= 5

x=5

Step-by-step explanation:

21-x=4x-4. You first would subtract 21 from both sides, so 21-21 is gone, and -4-21 is -25. Next, you would subtract 4x from both sides, -x-4x= -5 and 4x-4x is 0, aka gone. Now, you have -5x = -25. You now divide both sides by -5. -5/-5 cancels out. -25/-5 is 5. All you are left with is x = 5(because a negative divided by a negative is a positive). Hope this helps! :)

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

the car was traveling 40 mph before it started skidding. ( 2 points ) 17. was the driver were her brakes working at 75% efficiency or better? ( 2 points ) yes 29.

step-by-step explanation: