Question

решите уравнение(1-7/10)X=21/4

Answer 1

3/10 х = 5 1/4 Х = 2/5

Answer 2

х=$frac{21}{4}$-(1-$frac{7}{10}$
х=$frac{105}{20}$-$frac{6}{20}$
х=$frac{99}{20}$