Question

Решить уравнение с проверкой ; 810 : а =5400 : 60

Answer 1

810:а =5400:60

486000=5400а

а=486000:5400

а=90

Answer 2

$810 \div a = 5400 \div 60$

$810 \div a = 90$

$90a = 810$

$a = 810 \div 90$

$a = 9$

Проверяем

$810 \div 9 = 90$

$5400 \div 60 = 90$

$90 = 90$