Solve for X:
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Solve for X:
To solve for, first, get all terms involving on one side and constants on the other. Start from:
Subtract from both sides to simplify:
Add 7 to both sides to isolate the terms with:
Divide each side by 3 to solve for:
Thus, is .
\( x+7=14 \)
\( x=\text{?} \)
We want to collect all x terms on one side. Since we have 4x on the left and x on the right, subtracting x from both sides gives us 3x on the left and 0x on the right - much cleaner!
That works too! You'd get , then solve to get the same answer. Choose whichever keeps your coefficient positive - it's less confusing.
Think "opposite operations": if you see +5, subtract 5 from both sides. If you see -7, add 7 to both sides. You're undoing what's been done to x!
means "3 times some number equals 12." To find that number, divide both sides by 3 to get .
Yes! You can also graph both sides as separate lines: y = 4x - 7 and y = x + 5. Where they intersect is your solution: (4, 9).
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