8,1:0,6×1875+1,5x625x9 B=_______________________________ 105+205+795+895 14/09/2021 Bởi aihong 8,1:0,6×1875+1,5x625x9 B=_______________________________ 105+205+795+895
$B= \dfrac{ 8,1 : 0,6 \times 1875 + 1,5 \times 625 \times 9}{105 + 205 + 795 + 895}$ $B = \dfrac{8,1 : \dfrac{6}{10} \times 1875 + \dfrac{1}{2} \times 3 \times 625 \times 9}{2000}$ $B = \dfrac{\dfrac{9}{10} \times \dfrac{10}{6} \times 9 \times 1875 + \dfrac{1}{2} \times 1875 \times 9}{2000}$ $B = \dfrac{ 1875 \times 9 \times (\dfrac{3}{2} + \dfrac{1}{2})}{2000}$ $B = \dfrac{1875 \times 9 \times 2}{1000 \times 2}$ $B = \dfrac{16875}{1000}$ $B = 16,875$ Bình luận
Đáp án: $B=\dfrac{8,1÷0,6×1875+1,5×625×9}{105+205+795+895}$ $B=\dfrac{8,1÷\dfrac{6}{10}×1875+\dfrac{1}{2}×3×625×9}{2000}$ $B=\dfrac{\dfrac{9}{10}\times\dfrac{10}{6}\times9\times1875+\dfrac{1}{2}\times1875\times9}{2000}$ $B=\dfrac{1875\times9\times(\dfrac{3}{2}+\dfrac{1}{2})}{2000}$ $B=\dfrac{1875\times9\times2}{1000\times2}$ $B=\dfrac{16875}{1000}$ $B=16,875$ Bình luận
$B= \dfrac{ 8,1 : 0,6 \times 1875 + 1,5 \times 625 \times 9}{105 + 205 + 795 + 895}$
$B = \dfrac{8,1 : \dfrac{6}{10} \times 1875 + \dfrac{1}{2} \times 3 \times 625 \times 9}{2000}$
$B = \dfrac{\dfrac{9}{10} \times \dfrac{10}{6} \times 9 \times 1875 + \dfrac{1}{2} \times 1875 \times 9}{2000}$
$B = \dfrac{ 1875 \times 9 \times (\dfrac{3}{2} + \dfrac{1}{2})}{2000}$
$B = \dfrac{1875 \times 9 \times 2}{1000 \times 2}$
$B = \dfrac{16875}{1000}$
$B = 16,875$
Đáp án:
$B=\dfrac{8,1÷0,6×1875+1,5×625×9}{105+205+795+895}$
$B=\dfrac{8,1÷\dfrac{6}{10}×1875+\dfrac{1}{2}×3×625×9}{2000}$
$B=\dfrac{\dfrac{9}{10}\times\dfrac{10}{6}\times9\times1875+\dfrac{1}{2}\times1875\times9}{2000}$
$B=\dfrac{1875\times9\times(\dfrac{3}{2}+\dfrac{1}{2})}{2000}$
$B=\dfrac{1875\times9\times2}{1000\times2}$
$B=\dfrac{16875}{1000}$
$B=16,875$