x + 4 + 3x also could you pls explain it to me

Question

haidang · Answer

Answer:   4x + 4   Step-by-step explanation:   1) Collect like terms.   (x + 3x) + 4  2) Simplify.  4x + 4    Therefor    ,         the         answer         is          4x             +             4     .

Jezebel · Answer

Answer:   x + 4 + 3x     = 4 + 4x

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