Trang chủ » Hỏi đáp » Môn Toán Tính: A)2/3+/34 b)3/5-2/3 c)3/4×6/5 d)3/4:3/2 07/11/2024 Tính: A)2/3+/34 b)3/5-2/3 c)3/4×6/5 d)3/4:3/2
a, $\frac{2}{3}$ +$\frac{3}{4}$ = $\frac{8}{12}$ + $\frac{9}{12}$ = $\frac{17}{12}$ b, $\frac{3}{5}$ – $\frac{2}{3}$ = $\frac{9}{15}$ – $\frac{10}{15}$ = $\frac{-1}{15}$ c, $\frac{3}{4}$ × $\frac{6}{5}$ = $\frac{3×8}{4×5}$ = $\frac{18}{20}$ = $\frac{9}{10}$ d, $\frac{3}{4}$÷ $\frac{3}{2}$= $\frac{3×2}{4×3}$ =$\frac{6}{12}$= $\frac{1}{6}$ Cho mink hayy nhấtt nhăă ;ω;@hanguyen42638 #hoidap2477 Trả lời
Giải đáp + Lời giải và giải thích chi tiết: a, 2/3 + 3/4 = (2xx4)/(3xx4) + (3xx3)/(4xx3) = 8/12 + 9/12 = ( 8+9)/12 = 17/12 _____________________________________ b)3/5-2/3 = (3xx3)/(5xx3) – (2xx5)/(3xx5) = 9/15 – 10/15 = (9-10)/15 = -1/15 __________________________________________ c)3/4xx6/5 = (3xx6)/(4xx5) = 18/20 = (18:2)/(20:2) = 9/10 ___________________________________________ 3/4:3/2 = 3/4 xx 2/3 = (3xx2)/(4xx3) = 9/12 = (9:3)/(12:3) = 3/4 color[pink][#Taki] Trả lời
b, $\frac{3}{5}$ – $\frac{2}{3}$ = $\frac{9}{15}$ – $\frac{10}{15}$ = $\frac{-1}{15}$
c, $\frac{3}{4}$ × $\frac{6}{5}$ = $\frac{3×8}{4×5}$ = $\frac{18}{20}$ = $\frac{9}{10}$
d, $\frac{3}{4}$÷ $\frac{3}{2}$= $\frac{3×2}{4×3}$ =$\frac{6}{12}$= $\frac{1}{6}$
Cho mink hayy nhấtt nhăă ;ω;
@hanguyen42638 #hoidap2477