Answer:
[tex] \boxed{ \bold{ \boxed{ \sf{4x - 36}}}}[/tex]
Step-by-step explanation:
[tex] \sf{x + 3x - 36}[/tex]
Here, we have to collect like terms.
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▪️What do you mean by like terms ?
⇒Like terms are those which have the same base. While adding or subtracting like terms, we should add or subtract the coefficients of like terms.
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Let's add the like terms :
Answer : 4x - 36
Hope I helped!
Best regards!
