1) 7x+13x = 20x2) 15y-5y = 10y3) 6a+a = 7a4) 22c+8c+5 = 30c+5
1) При a=9: 12598 = 9000При a=19: 125198 = 19000
2) При b=10: 5510+4510+12 = 550+450+12 = 1012При b=100: 55100+45100+12 = 5500+4500+12 = 10012
1) 7x+13x = 20x
2) 15y-5y = 10y
3) 6a+a = 7a
4) 22c+8c+5 = 30c+5
1) При a=9: 12598 = 9000
При a=19: 125198 = 19000
2) При b=10: 5510+4510+12 = 550+450+12 = 1012
При b=100: 55100+45100+12 = 5500+4500+12 = 10012