TWO BOOKS AND THREE PENS COST $35

Question

Câu 9: Two books and three pens cost $35. Two books and six pén cost $50. How much does each cost?

Accepted Answer

Bài 1: Chọn các giá trị theo thứ tự tăng dần 11 > 18 > 17 > 1 > 13 > 9 > 10 > 16 > 8 >15 > 20 > 4 > 5 > 14 > 2 > 6 > 7 > 3 > 12 > 19 Bài 2:...