Question

va rog .....dau coroană ​

Answer 1

Răspuns:

Explicație pas cu pas:

a)

6x + 2 = 5x + 3

6x - 5x = 3 - 2

x = 1

____________

b)

3(x + 1/2) + 4x = 7x + 3/2

3x + 3/2 + 4x = 7x + 3/2

7x + 3/2 = 7x + 3/2

0 = 0

Solutia  = multimea M

______________

c)

x : 2/3 - 1/5 = 73/10

x * 3.2 = 73/10 + 1/5 = 73/10 + 2/10 = 75/10

x = 75/10 : 3/2 = 75/10 * 2/3 = 150/30 = 5

nu are solutii in multimea M pentru ca 5 nu apartine multimii M