Решите уравнение (413-415) 413 1)x+23=41; 2)36+y=74; 3)85+z=97; 4)x-61=17; 5)46-y=24; 6)53-z=25; 7)x+97=103;

1) х + 23 = 41;

х = 41 - 23;

х = 18.

2) 36 + у = 74;

у = 74 - 36;

у = 38.

3) 85 + z = 97;

z = 97 - 85;

z = 12.

4) x - 61 = 17;

x = 17 + 61;

x = 78.

5) 46 - y = 24;

46 - 24 = y;

y = 22.

6) 53 - z = 25;

53 - 25 = z;

z = 28.

7) x + 97 = 103;

x = 103 - 97;

x = 6.

8) 69 - y = 15;

69 - 15 = y;

y = 54.

9) 132 - z = 84;

132 - 84 = z;

z = 48.

10) 12x = 60;

x = 60 : 12;

x = 5.

11) 33y = 132;

y = 132 : 33;

y = 4.

12) 51z = 357;

z = 357 : 51;

z = 7.

13) 2x - 15 = 13;

2x = 13 + 15;

2x = 28;

x = 28 : 2;

x = 14.

14) 7y - 25 = 45;

7y = 45 + 25;

7y = 70;

y = 70 : 7;

y = 10.

15) 130 - 4x = 70;

130 - 70 = 4x;

60 = 4x;

x = 60 : 4;

x = 15.

16) 49 - 3x = 34;

49 - 34 = 3x;

15 = 3x;

x = 15 : 3;

x = 5.

17) 9y - 89 = 55;

9y = 55 + 89;

9y = 144;

y = 144 : 9;

y = 16.

18) 74 - 8z = 2;

74 - 2 = 8z;

72 = 8z;

z = 72 : 8;

z = 9.