Question

математика номер 869 (1,2) приз срочно ​

Answer 1

$15.62 + x = 20 \\ x = 20 - 15.62 \\ x = 4.38 \\ \\ 15.62 + 4.38 = 20 \\ 20 = 20 \\ \\ \\ 9.54 - x = 7.268 \\ x = 9.54 - 7.268 \\ x = 2.272 \\ \\ 9.54 - 2.272 = 7.268 \\ 7.268 = 7.268$

Answer 2

1)15,62+х=20

Х=20-15,62

Х=4,38

Ответ:4,38

2)9,54-х=7,268

Х=9,54-7,268

Х=2,272

Ответ:2,272