Resolve essa equação ai:

Resolve essa equação ai:



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    Oi,

    Resoluo

    4a + (60 — a) = 2a + 90
    4a + 60 — a = 2a + 90
    4a — a — 2a = 90 — 60
    a = 30

    Espero ter ajudado e bons estudos !

  • Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
    4a + (60 — a) = 2a + 90 >> letras de um lado e nmeros para o outro

    4a — 2a — a = 90 — 60

    a = 30


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+ 12 = 21