Giúp tớ câu này nhanh lên

Đáp án + Giải thích các bước giải: ` A = (3/10 + 4/5 xx 1/2) : (2 8/9 - 1 1/3) + 2013` ` A = (3/10 + 4/5 xx 1/2 ) : (26/9 - 4/3) + 2013` ` A = (3/10 + 2/5) : (26/9 - 4/3) + 2013` ` A = 7/10 : 14/9 + 2013` ` A = 9/20 + 2013` ` A = 0,45 + 2013` ` A = 2013 , 45` `#Solier`

`b)` `A=(3/10+4/5·1/2)÷(2 8/9-1 1/3)+2013` `A=(3/10+2/5)÷(26/9-4/3)+2013` `A=(3/10+4/10)÷(26/9-4/3)+2013` `A=7/10÷(26/9-12/9)+2013` `A=7/10÷14/9+2013` `A=7/10·9/14+2013` `A=9/20+2013` `A=2013,45` $\color{#145277}{2}\color{#246483}{5}\color{#34768F} {2}\color{#44889B}{5}\color{#539AA7}{1}\color{#63ACB3} {3}\color{#73BEBF}{6}\color{#83D0CB}{8}$