☰ Contents · Algebra

Review of Grades 5–6 topics

Lessons 1 · 1 lessons · Sh.A. Alimov, O.R. Xolmuhamedov, M.A. Mirzaahmedov. Algebra, Grade 7, revised and expanded 5th edition. O‘qituvchi NMIU, Tashkent, 2017
Answers are for parents and teachers.
1
A book cost 480 000 soums and a 25% discount was given. What is the new price (soums)?
2
Compute (-12) + 5 · (-3) - (-9) : 3.
3
Solve 7x - 4 = 2x + 21.
4
The arithmetic mean of 5 numbers is 14. After a sixth number is added the mean becomes 15. What is the sixth number?