Toán A=2/3 + 2/9 + 1/4 _____________________ 4/3 + 4/5 + 2/4 20/11/2021 By Sadie A=2/3 + 2/9 + 1/4 _____________________ 4/3 + 4/5 + 2/4
Đáp án: $\dfrac{205}{474}$ Giải thích các bước giải: $A=\dfrac{\dfrac{2}{3}+\dfrac{2}{9}+\dfrac{1}{4}}{\dfrac{4}{3}+\dfrac{4}{5}+\dfrac{2}{4}}$ $A=\dfrac{\dfrac{24}{36}+\dfrac{8}{36}+\dfrac{9}{36}}{\dfrac{80}{60}+\dfrac{48}{60}+\dfrac{30}{60}}$ $A=\dfrac{\dfrac{24+8+9}{36}}{\dfrac{80+48+30}{60}}$ $A=\dfrac{\dfrac{41}{36}}{\dfrac{158}{60}}$ $A=\dfrac{41}{36}:\dfrac{158}{60}$ $A=\dfrac{41}{36}\cdot\dfrac{60}{158}$ $A=\dfrac{205}{474}$ Trả lời
$A = \dfrac{\dfrac{2}{3}+\dfrac{2}{9}+\dfrac{1}{4}}{\dfrac{4}{3}+\dfrac{4}{5}+\dfrac{2}{4}}$ $ = \dfrac{\dfrac{41}{36}}{\dfrac{79}{30}}$ $= \dfrac{41}{36} . \dfrac{30}{79}$ $ = \dfrac{205}{474}$ Trả lời
Đáp án:
$\dfrac{205}{474}$
Giải thích các bước giải:
$A=\dfrac{\dfrac{2}{3}+\dfrac{2}{9}+\dfrac{1}{4}}{\dfrac{4}{3}+\dfrac{4}{5}+\dfrac{2}{4}}$
$A=\dfrac{\dfrac{24}{36}+\dfrac{8}{36}+\dfrac{9}{36}}{\dfrac{80}{60}+\dfrac{48}{60}+\dfrac{30}{60}}$
$A=\dfrac{\dfrac{24+8+9}{36}}{\dfrac{80+48+30}{60}}$
$A=\dfrac{\dfrac{41}{36}}{\dfrac{158}{60}}$
$A=\dfrac{41}{36}:\dfrac{158}{60}$
$A=\dfrac{41}{36}\cdot\dfrac{60}{158}$
$A=\dfrac{205}{474}$
$A = \dfrac{\dfrac{2}{3}+\dfrac{2}{9}+\dfrac{1}{4}}{\dfrac{4}{3}+\dfrac{4}{5}+\dfrac{2}{4}}$
$ = \dfrac{\dfrac{41}{36}}{\dfrac{79}{30}}$
$= \dfrac{41}{36} . \dfrac{30}{79}$
$ = \dfrac{205}{474}$