Respuesta :

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!

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