Завдання 1402 - 1500 » 1433

Розв’яжіть рівняння: 1) 5x – 16 = 14; 5x = 14 + 16; 5x = 30; x = 30 : 5; x = 6. 2) 8y = 10 + 3y; 8y – 3y = 10; 5y = 10; y = 10 : 5; y = 2. 3) 24x – 16 = 8 + 12x; 24x – 12x = 8 + 16; 12x = 24; x = 24 : 12; x = 2. 4) 12 – y = 2y + 6; –y – 2y = –12 + 6; –3y = –6; y = –6 : (–3); y = 2. 5) 3x + 3 = 27 – 5x; 3x + 5x = 27 – 3; 8x = 24; x = 24 : 8; x = 3. 6) –3y – 8 = 2y + 7; –3y – 2y = 7 + 8; –5y = 15; y = 15 : (–5); y = –3.