Решите уравнение: (a-15) - 16=18 (x-41) - 21=8 (136-x) - 16=52 (558+x) - 52=746 419 - (y-9) = 36 92 - (17-b) = 89

Вычислим корни.

1) (a - 15) - 16 = 18;

Раскроем скобки.

a - 15 - 16 = 18;

a = 18 + 15 + 16;

a = 30 + 19;

a = 49.

2) (x - 41) - 21 = 8;

x - 41 = 8 + 21;

x - 41 = 29;

x = 29 + 41;

x = 70.

3) (136 - x) - 16 = 52;

136 - x - 16 = 52;

-x + 120 = 52;

-x = 52 - 120;

-x = - 70 + 2;

-x = - 68;

x = 68.

4) (558 + x) - 52 = 746;

558 + x - 52 = 746;

x + 506 = 746;

x = 746 - 506;

x = 240.

5) 419 - (y - 9) = 36;

419 - y + 9 = 36;

428 - y = 36;

y = 428 - 36;

y = 392.

6) 92 - (17 - b) = 89;

92 - 17 + b = 89;

b + 75 = 89;

b = 89 - 75;

b = 14.