Question
Simplify the expression
9x+15
Evaluate
4x+7+5x+8
Add the terms
More Steps

Evaluate
4x+5x
Collect like terms by calculating the sum or difference of their coefficients
(4+5)x
Add the numbers
9x
9x+7+8
Solution
9x+15
Show Solution

Factor the expression
3(3x+5)
Evaluate
4x+7+5x+8
Add the terms
More Steps

Evaluate
4x+5x
Collect like terms by calculating the sum or difference of their coefficients
(4+5)x
Add the numbers
9x
9x+7+8
Add the numbers
9x+15
Solution
3(3x+5)
Show Solution

Find the roots
x=−35
Alternative Form
x=−1.6˙
Evaluate
4x+7+5x+8
To find the roots of the expression,set the expression equal to 0
4x+7+5x+8=0
Add the terms
More Steps

Evaluate
4x+7+5x+8
Add the terms
More Steps

Evaluate
4x+5x
Collect like terms by calculating the sum or difference of their coefficients
(4+5)x
Add the numbers
9x
9x+7+8
Add the numbers
9x+15
9x+15=0
Move the constant to the right-hand side and change its sign
9x=0−15
Removing 0 doesn't change the value,so remove it from the expression
9x=−15
Divide both sides
99x=9−15
Divide the numbers
x=9−15
Solution
More Steps

Evaluate
9−15
Cancel out the common factor 3
3−5
Use b−a=−ba=−ba to rewrite the fraction
−35
x=−35
Alternative Form
x=−1.6˙
Show Solution
