Question

Реши уравнения помогите​

Answer 1

Ответ:

5/100+8/100=13/100

20/100-13/100=7/100

Ответ:7/100

Answer 2

Ответ:

решим уравнение:

$\frac{5}{100} + \frac{8}{100} + x = \frac{20}{100} \\ \frac{13}{100} + x = \frac{20}{100} \\ x = \frac{20}{100} - \frac{13}{100} \\ x = \frac{7}{100} \\ = = = = = = = = = = = = = \\ \frac{5}{100} + \frac{8}{100} + \frac{7}{100} = \frac{20}{100} \\ \frac{20}{100} = \frac{20}{100}$