Question

решите номер 340 (примеры а, в)​

Answer 1

$8.3x + 2x - 60.5 = 300 \\ 10.3x = 300 + 60.5 \\ 10.3x = 360.5 \\ x = 360. 5\div 10.3 \\ x = 3605 \div 103 \\ x = 35$

$86.4 \div (35.5 - 7x) = 16 \\ 35.5 - 7x = 86.4 \div 16 \\ 35.5 - 7x = 5.4 \\ 7x = 35.5 - 5.4 \\ 7x = 30.1 \\ x = 30.1 \div 7 \\ x = 4.3$