Add and subtract like terms
Key notes:
Like terms are terms that have the same variables raised to the same powers.
To add like terms, add their coefficients.
Learn with an example
Simplify the expression:
–10j+8j+–7j=——
Combine the j terms by adding their coefficients:
–10j+8j+–7j=
–9j
There are no other like terms to combine.
The answer is –9j.
Simplify the expression:
3m–5m+9m=—–
Combine the m terms by adding and subtracting their coefficients:
3m–5m+9m
=7m
There are no other like terms to combine.
The answer is 7m.
Simplify the expression:
8z+9z–10z=——
Combine the z terms by adding and subtracting their coefficients:
8z+9z–10z
=7z
There are no other like terms to combine.
The answer is 7z.
let’s practice!
