Question

уравнение 3 1/8:a=2 1/3:4 1/5

Answer 1

(3 1/8+1 3/4)x=2 1/6 (3 1/8+1 6/8)x=2 1/6 4 7/8x=2 1/6 X=2 1/6:4 7/8 X=13/6:39/8 X=13/6*8/39 X=4/9

Answer 2

3 1/8÷а=2 1/3 ÷ 4 1/5
3 1/8÷а= 2 1/3÷4 1/5=7/3÷21/5=7/3×5/21= сокращаем получаем 5/9
находим а= 3 1/8÷5/9= 25/8×9/5=Скоращаем 25 и 5= 45/8= 5 5/8