Calculate X:
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Calculate X:
To solve this problem, we'll follow these steps:
Now, let's work through each step:
Step 1: Distribute on the left: . So, the left side becomes .
Distribute on the right: . So, the right side becomes .
Step 2: Combine the like terms:
Left side: .
Right side: .
Step 3: Equating both sides, we have:
.
Move all -terms to one side and constant terms to the other:
Add to both sides:
.
Step 4: Isolate by subtracting 9 from both sides:
.
Divide both sides by 12:
.
Therefore, the solution to the equation is , which corresponds to choice 2.
\( -16+a=-17 \)
You must distribute first when you have parentheses! This eliminates the grouping symbols so you can combine like terms properly.
Like terms have the same variable with the same power. So -8x and -5x are like terms, but -8x and 15 are not because one has x and the other doesn't.
Fractional answers are completely normal in algebra! When you divide 6 by 12, you get , which simplifies perfectly.
It doesn't matter which side you choose! You can move all x-terms to the left or right - just be consistent and remember to change signs when crossing the equals sign.
Substitute into the original equation. If both sides equal the same number, you're right!
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