Answer:
x= -3
Step-by-step explanation:
mutliply the -3 to parentheses.
-3x+12 = 21
-3x = 21-12
/-3
x= 9/-3
x= -3
Hey there!
[tex]-3(x-4)=21[/tex]
To solve, we will need to simplify this equation.
[tex]-3(x-4)=21\\[/tex]
We will need to distribute.
[tex](-3)(x)+(-3)(-4)=21\\\text{Equals:} -3x+12=21[/tex]
Now we have to subtract 12 from both sides.
[tex]-3x+12-12=21-12\\\text{Equals:}-3x=9[/tex]
In our last step, we have to divide both sides by -3 to get the answer.
[tex]\frac{-3x}{-3} =\frac{9}{-3}\\ \text{Equals: }x=-3[/tex]
Hope this helps!
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