Question

Помогите, лень делать и понять не могу
105:(42-x)=7
24 +5x=199

Answer 1

Ответ:

$105 \div (42 - x) = 7 \\ 105 \div (42 - x) = x, x≠42 \\ \frac{105}{42 - x} = 7 \\ 105 = 7(42 - x) \\ 15 = 42 - x \\ x = 42 - 15 \\ x = 27, x≠42 \\ x = 27$

$24 + 5x = 199 \\ 5x = 199 - 24 \\ 5x = 175 \\ x = 35$