Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{20x}}}}}[/tex]
Step-by-step explanation:
For the addition and subtraction of expression, like terms are added or subtracted as per the signs given and unlike terms are kept as they are. The sum or difference of like terms give another term in which it's coefficient is sum or difference of their coefficient.
Let's solve
[tex] \sf{18x + 2x}[/tex]
Collect like terms. Add : 18x and 2x
[tex] \dashrightarrow{ \sf{20x}}[/tex]
Hope I helped!
Best regards! :D
