Question

2 2
4 *х+ 5 * х =564
решить уравнение или 8*х+10*х=564

Answer 1

4*х+5*х=564
(4+5)*х=564
9*х=564
х=564:9

8*х+10*х=564
(8+10)*х=564
18*х=564
х=564:18