Algebra
Calculus
Trigonometry
Matrix
Question
Simplify the expression
−29x
Evaluate
21x−5x
Collect like terms by calculating the sum or difference of their coefficients
(21−5)x
Solution
More Steps
Evaluate
21−5
Reduce fractions to a common denominator
21−25×2
Write all numerators above the common denominator
21−5×2
Multiply the numbers
21−10
Subtract the numbers
2−9
Use b−a=−ba=−ba to rewrite the fraction
−29
−29x
Show Solution
Find the roots
x=0
Evaluate
21x−5x
To find the roots of the expression,set the expression equal to 0
21x−5x=0
Subtract the terms
More Steps
Simplify
21x−5x
Collect like terms by calculating the sum or difference of their coefficients
(21−5)x
Subtract the numbers
More Steps
Evaluate
21−5
Reduce fractions to a common denominator
21−25×2
Write all numerators above the common denominator
21−5×2
Multiply the numbers
21−10
Subtract the numbers
2−9
Use b−a=−ba=−ba to rewrite the fraction
−29
−29x
−29x=0
Change the signs on both sides of the equation
29x=0
Solution
x=0
Show Solution