Условие:

Реши уравнения.
380 + x = 510;
700 − x = 427;
560 : x = 70;
24 * x = 480;
x : 16 = 80;
x * 1 = 13.

380 + x = 510
x = 510 − 380
x = 130
 
700 − x = 427
x = 700 − 427
x = 273
 
560 : x = 70
x = 560 : 70
x= 8
 
24 * x = 480
x = 480 : 24
x = 20
 
x : 16 = 80
x = 80 * 16
x = 1280
 
x * 1 = 13
x = 13 : 1
x = 13