Solve multi-step linear equations
20x - 5 (6x + 15) = -45
First, distribute the -5 to the terms in the parentheses:
20x - 6x - 75 = -45
Combine like terms:
14x - 75 = -45
Next, isolate the variable x by adding 75 to both sides of the equation:
14x = 30
Finally, divide by 14 to solve for x:
x = 30/14
x = 15/7 or approximately 2.14
Wrong
Let's go through the steps again:
20x - 5(6x + 15) = -45
First, distribute the -5 to the terms in the parentheses:
20x - 30x - 75 = -45
Combine like terms:
-10x - 75 = -45
Next, isolate the variable x by adding 75 to both sides of the equation:
-10x = 30
Finally, divide by -10 to solve for x:
x = 30 / -10
x = -3
Therefore, the solution to the equation is x = -3.