1. Домашні завдання
  2. 3 клас
  3. Математика
  4. Богданович

Номер 1061

x – 48 : 6 = 204;
x – 8 = 204;
x = 204 + 8;
x = 212;
212 – 48 : 6 = 204;
212 – 8 = 204;
204 = 204.

23 · 5 – x = 42;
115 – x = 42;
x = 115 – 42;
x = 73;
23 · 5 – 73 = 42;
115 – 73 = 42;
42 = 42.

x : 6 = 305 – 297;
x : 6 = 8;
x = 8 · 6;
x = 48;
48 : 6 = 8;
305 – 297 = 8;
8 = 8.

600 : x = 34 + 26;
600 : x = 60;
x = 600 : 60;
x = 10;
600 : 10 = 60;
34 + 26 – 60;
60 = 60.

x · (38 – 29) = 72;
x · 9 = 72;
x = 72 : 9;
x = 8;
8 · (38 – 29) = 72;
8 · 9 = 72;
72 = 72.

6 · x = 720 : 8;
6 · x = 90;
x = 90 : 6;
x = 15;
6 · 15 = 90;
720 : 8 = 90;
90 = 90.