Уравнение1 7(2х+9)+3=114 уравнение номер 2 3(4х+13)-25=74

Уравнение 1

7(2х + 9) + 3 = 114;

7(2х + 9) = 114 - 3;

7(2х + 9) = 111;

(2х + 9) = 111 / 7;

2х + 9 = 111 / 7;

2х + 9 = 15,86;

2х = 15,86 - 9;

2х = 6,86;

х = 6,86 / 2;

х = 3,43.

Либо

7(2х + 9) + 3 = 114;

14х + 63 + 3 = 114;

14х + 66 = 114;

14х = 114 - 66;

14х = 48;

х = 48 / 14;

х = 48 / 14;

х = 3,43.

уравнение 2

3(4х + 13) - 25 = 74;

12х + 39 - 25 = 74;

12х + 14 = 74;

12х = 74 - 14;

12х = 60;

х = 60 / 12;

х = 5;

Либо

3(4х + 13) - 25 = 74;

3(4х + 13) = 74 + 25;

3(4х + 13) = 99;

(4х + 13) = 99 / 3;

4х + 13 = 33;

4х = 33 - 13;

4х = 20;

х = 20 / 4;

х = 5.