Question

Solve for x: -3(x - 3) = 21

x = -10

x = 10

x = -4

x = 4

Answer 1

to solve for x: -3(x - 3) = 21 first distribute
-3x + 9 = 21
then subtract 9 from both sides
divide both sides by negative 3

Answer 2

4

Answer 3

Distribute out the -3 toy the both x and -3. -3x+9=21 | -3x=12| x=-4

Answer 4

it was a divide by negative 3 on both sides
so you should end up with a negative number :)

Answer 5

Ok, the first step is to distribute the -3 to (x - 3), this gives you -3x + 9 = 21.
Next, you want to isolate the variable. To do this, you need to subtract 9 from 21 giving you -3x = 12. Finally, divide 12 by -3.
Giving you a final answer of x = -4