Algebra
Calculus
Trigonometry
Matrix
Question
Solve the equation
u=−8
Evaluate
6u+9=18u−3u+81
Subtract the terms
More Steps
Evaluate
18u−3u
Collect like terms by calculating the sum or difference of their coefficients
(18−3)u
Subtract the numbers
15u
6u+9=15u+81
Move the expression to the left side
6u+9−15u=81
Move the expression to the right side
6u−15u=81−9
Add and subtract
More Steps
Evaluate
6u−15u
Collect like terms by calculating the sum or difference of their coefficients
(6−15)u
Subtract the numbers
−9u
−9u=81−9
Add and subtract
−9u=72
Change the signs on both sides of the equation
9u=−72
Divide both sides
99u=9−72
Divide the numbers
u=9−72
Solution
More Steps
Evaluate
9−72
Reduce the numbers
1−8
Calculate
−8
u=−8
Show Solution
Graph
