Question

(1400+b)-7000=8200 ПЛАЧУ 15 БАЛЛОВ

Answer 1

(1400 + b) - 7000 = 8200

(b + 1400) - 7000 = 8200

b - 5600 = 8200

b - 5600 + 5600 = 8200 + 5600

b = 8200 + 5600

b = 13800

OTBET

b = 13 800

Answer 2

1400+b= 8200+7000;
1400+b=15200;
b=15200-1400;
b=13800.