Question

(720+e)*501=365730 (k+2958):87=134

Answer 1

1)
(720 + е) * 501 = 365.730
720 + е = 365.730 : 501
720 + е = 730
е = 730 - 720
е = 10
проверка:
(720 + 10) * 501 = 365.730
730 * 501 = 365.730
365.730 = 365.730


2)
(k + 2.958) : 87 = 134
k + 2.958 = 134 * 87
k + 2.958 = 11.658
k = 11.658 - 2.958
k = 8.700
проверка:
(8.700 + 2.958) : 87 = 134
11.658 : 87 = 134
134=134