Question
Simplify the expression
12−x+4
Evaluate
4x×1−3x−1
Any expression multiplied by 1 remains the same
4x−3x−1
Reduce fractions to a common denominator
4×3x×3−3×4(x−1)×4
Multiply the numbers
12x×3−3×4(x−1)×4
Multiply the numbers
12x×3−12(x−1)×4
Write all numerators above the common denominator
12x×3−(x−1)×4
Use the commutative property to reorder the terms
123x−(x−1)×4
Multiply the terms
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Evaluate
(x−1)×4
Apply the distributive property
x×4−4
Use the commutative property to reorder the terms
4x−4
123x−(4x−4)
Solution
More Steps

Evaluate
3x−(4x−4)
If a negative sign or a subtraction symbol appears outside parentheses, remove the parentheses and change the sign of every term within the parentheses
3x−4x+4
Subtract the terms
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Evaluate
3x−4x
Collect like terms by calculating the sum or difference of their coefficients
(3−4)x
Subtract the numbers
−x
−x+4
12−x+4
Show Solution

Find the roots
x=4
Evaluate
4x×1−3x−1
To find the roots of the expression,set the expression equal to 0
4x×1−3x−1=0
Any expression multiplied by 1 remains the same
4x−3x−1=0
Subtract the terms
More Steps

Simplify
4x−3x−1
Reduce fractions to a common denominator
4×3x×3−3×4(x−1)×4
Multiply the numbers
12x×3−3×4(x−1)×4
Multiply the numbers
12x×3−12(x−1)×4
Write all numerators above the common denominator
12x×3−(x−1)×4
Use the commutative property to reorder the terms
123x−(x−1)×4
Multiply the terms
More Steps

Evaluate
(x−1)×4
Apply the distributive property
x×4−4
Use the commutative property to reorder the terms
4x−4
123x−(4x−4)
Subtract the terms
More Steps

Evaluate
3x−(4x−4)
If a negative sign or a subtraction symbol appears outside parentheses, remove the parentheses and change the sign of every term within the parentheses
3x−4x+4
Subtract the terms
−x+4
12−x+4
12−x+4=0
Simplify
−x+4=0
Move the constant to the right side
−x=0−4
Removing 0 doesn't change the value,so remove it from the expression
−x=−4
Solution
x=4
Show Solution
