What is the value of x in - 4 (5x-5) = 120

Answer: x = - 5

Step-by-step explanation: To solve this equation, we start by distributing the - 4 through the parentheses on the left side.

So we have - 4 times x which is - 20x and - 4 times - 5 which is positive 20. So our equation now reads - 20x + 20 = 120.

Solving from here, we subtract 20 from both sides of the equation and we have - 20x = 100 and dividing both sides by - 20, we find that x = - 5.

Although I will not provide work to check our answer, the great thing about solving equations is that your can always check your answer by substituting what you got as a final answer into the original equation.