1) 3х+15=432-23 2) 3х+70=3502 3) (16х-52)3=180 4) (13х-63)6+86=95

Найдем корешки уравнений.

1)  3 * х + 15 = 43 * 2 23;

3 * x + 15 = 86 23;

3 * x + 15 = 63;

3 * x = 63 15;

3 * x = 48;

x = 48/3;

x = 16.

2) 3 * х + 70 = 350/2;

3 * x + 70 = 175;

3 * x = 175 70;

3 * x = 105;

x = 105/3;

x = 35.

3) (16 * х - 52) * 3 = 180;

16 * x 52 = 180/3;

16 * x 52 = 60;

16 * x = 60 + 52;

16 * x = 112;

x = 112/16;

x = 56/8;

x = 7.

4) (13 * х - 63)/6 + 86 = 95;

(13 * x 63)/6 = 95 86;

(13 * x 63)/6 = 9;

13 * x 63 = 6 * 9;

13 * x = 63 + 63;

13 * x = 2 * 63;

x = 2 * 63/13;

x = 126/13.