Question

4.4(а,б) решите уравнение

Answer 1

9 + 13x = 35 + 26x
-13x = 35 - 9
-13x = 26
x=-2

7/9x + 3 = 2/3x +5
7/9*x - 2/3*x = 2

2/3*x домножаешь на 3

7/9*x - 6/9*x = 2
1/9x = 2

x= 2 : 1/9
x=18