Реши уравнения. (500-100) : у=5 700+а=480:4 120:х=150:5 304*2-с=106*5

Найдем корни.

1) (500 - 100) / у = 5;

400/y = 5;

5 * y = 400;

y = 400/5;

y = 80.

2) 700 + а = 480/4;

700 + a = 120;

a = 120 - 700;

a = - 600 + 20;

a = - 580.

3) 120/х = 150/5;

120/x = 50;

12/x = 5;

5 * x = 12;

x = 12/5;

x = 2.4.

4) 304 * 2 - с = 106 * 5;

608 - c = 530;

-c = 530 - 608;

-c = 30 - 108;

-c = - 70 - 8;

-c = - 78;

c = 78.