Реши уравнения х·60=900-420 а+160=900-652 900:у=50·6 у-65=56+345 45+х=45+98+100 1000-у=60+35+85

Найдем корни уравнений:

1) х * 60 = 900 - 420;

60 * x = 500 - 20;

60 * x = 480;

6 * x = 48;

x = 48/6;

x = 8;

2) а + 160 = 900 - 652;

a = 900 - 652 - 160;

a = 300 - 100 - 52 - 60;

a = 200 - 100 - 12;

a = 100 - 12;

a = 88.

3) 900/у = 50 * 6;

90/y = 5 * 6;

30 * y = 90;

y = 9/3;

y = 3;

4) у - 65 = 56 + 345;

y = 56 + 345 + 65;

y = 466;

5) 45 + х = 45 + 98 + 100;

x = 45 + 98 + 100 - 45;

x = 98 + 100;

x = 198;

6) 1000 - у = 60 + 35 + 85;

y = 1000 - 60 - 35 - 85;

y = 1000 - 180;

y = 900 - 80;

y = 820.