Question

1) (30 * х) : 25 = 60 2) 389 - х : 70 = 349

Answer 1

$(30 \times x) \div 25 = 60$

$(30x) \div 25 = 60$

$\frac{30x}{25} = 60$

$\frac{6x}{5} = 60$

$x = 50$

_______

$389 - x \div 70 = 349$

$389 - \frac{1}{70} x = 349$

$27230 - x = 24430$

$- x = 24430 - 27230$

$- x = - 2800$

$x = 2800$