Solve for X:
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Solve for X:
To solve this linear equation, we will proceed step by step:
Now, let's work through each step:
Step 1: Apply the distributive property:
becomes and becomes .
The right side becomes .
This gives us the new equation:
.
Step 2: Combine like terms:
On the left side: .
On the right side: remains unchanged.
The equation simplifies to:
.
Step 3: Rearrange the equation to isolate .
Add to both sides to move the terms to one side:
.
This simplifies to:
.
Next, add 12 to both sides to isolate terms with :
.
Thus, .
Step 4: Solve for :
Divide by 20:
.
Therefore, the correct solution is , which corresponds to choice 3.
\( 5x=1 \)
What is the value of x?
Remember the rule: negative × negative = positive! When you distribute -8(4-x), you get -8×4 = -32 and -8×(-x) = +8x. The second term becomes positive because you're multiplying two negatives.
Write them clearly on each side first: Left side has +8x and +8x = 16x. Right side has -4x. Then move all x terms to one side: 16x + 4x = 20x.
Yes! Just substitute into the original equation. Calculate the left side: -8(4-13/10) + 4(2×13/10+5). Calculate the right side: 2(7-2×13/10). If they're equal, you're correct!
Double-check your arithmetic! The most common errors are in distributing negatives or combining like terms. Work through each step slowly and verify that 20x = 26, so x = 26/20 = 13/10.
Make sure you've simplified your fraction completely! Also check that you moved all terms correctly: all x terms should end up on one side, all numbers on the other side.
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