Найдите значение x? (x + 12) + (2x + 18) = 90

20
21
23
25

📝 Detailed explanation

Упростим и решим уравнение: x + 12 + 2x + 18 = 90 ⇒ 3x + 30 = 90 ⇒ 3x = 60 ⇒ x = 20.

10 / 10 (100%)

⬅ Previous

Question 10 of 10

← Previous → Next Space — Show answer

🎯 Take a test on the topic «4 вариант | Обязательная математика»

This topic contains 10 questions. Test your knowledge!

🔐 Log in to take the test

📋 Related questions

📚 All tests by subject «Математика»

View all collections and topics in Математика

Go to subject →