Question

21-(3-3x)=45 solve the equation

Answer 1

x = 9.

To solve the equation we can use algebraic rules/properties.

First, simplify the parenthesis:

`21-(3-3x)=21-3+3x`

Now, substitute it back into the original equation:

`18+3x=45`

Subtract 18 from both sides:

`3x=27`

Divide both sides by 3 to isolate for x:

`x=9`