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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: a) 5/12 + 3/16 b) 4/15 – 2/3 c) 8/15 + 4/12 d) 15/6 – 10/2

Home/ Toán Lớp 6: a) 5/12 + 3/16 b) 4/15 – 2/3 c) 8/15 + 4/12 d) 15/6 – 10/2

Toán Lớp 6: a) 5/12 + 3/16 b) 4/15 – 2/3 c) 8/15 + 4/12 d) 15/6 – 10/2

Tháng Mười Một 12, 2022 Toán học 2 Comments 0 views

Toán Lớp 6: a) 5/12 + 3/16
b) 4/15 – 2/3
c) 8/15 + 4/12
d) 15/6 – 10/2

Comments ( 2 )

  1. ngoclanhoa
    ngoclanhoa
    12 Tháng Mười Một, 2022 at 5:00 chiều
    Reply
    $a) \dfrac{5}{12}+$$\dfrac{3}{16}$
    $=\dfrac{20}{48}+$$\dfrac{9}{48}$
    $=\dfrac{29}{48}$
    ____________________________________
    $b) \dfrac{4}{15}-$$\dfrac{2}{3}$
    $=\dfrac{4}{15}-$$\dfrac{10}{15}$
    $=\dfrac{-6}{15}$
    $=\dfrac{-2}{5}$
    ____________________________________
    $c) \dfrac{8}{15}+$$\dfrac{4}{12}$
    $=\dfrac{32}{60}+$$\dfrac{20}{60}$
    $=\dfrac{52}{60}$
    $=\dfrac{13}{15}$
    ____________________________________
    $d) \dfrac{15}{6}-$$\dfrac{10}{2}$
    $=\dfrac{15}{6}-$$\dfrac{30}{6}$
    $=\dfrac{-15}{6}$
    $=\dfrac{-5}{2}$
    \text{(Áp dụng BCNN)}
    \text{#mct}

  2. kimoanh34
    kimoanh34
    12 Tháng Mười Một, 2022 at 5:00 chiều
    Reply
    Giải đáp và giải thích các bước giải:
    $a)\frac{5}{12}+\frac{3}{16}$
    $=\frac{5.4}{12.4}+\frac{3.3}{16.3}$
    $=\frac{20}{48}+\frac{9}{48}$
    $=\frac{29}{48}$
    $b)\frac{4}{15}-\frac{2}{3}$
    $=\frac{4}{15}-\frac{2.5}{3.5}$
    $=\frac{4}{15}-\frac{10}{15}$
    $=-\frac{6}{15}=-\frac{2}{5}$
    $c)\frac{8}{15}+\frac{4}{12}$
    $=\frac{8}{15}+\frac{1}{3}$
    $=\frac{8}{15}+\frac{1.5}{3.5}$
    $=\frac{8}{15}+\frac{5}{15}$
    $=\frac{13}{15}$
    $a)\frac{15}{6}-\frac{10}{2}$
    $=\frac{15}{6}-5$
    $=\frac{15}{6}-\frac{5.6}{1.6}$
    $=\frac{15}{6}-\frac{30}{6}$
    $=-\frac{15}{6}=-\frac{5}{2}$

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222-9+11+12:2*14+14 = ? ( )

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