Question

Kak tolong bantu...... ........

Answer 1

(5(1) + 6(5) + 7(6) + 8(x) + 9(3) + 10(1))/(1 + 5 + 6 + x + 3 + 1) = 7, 3
→ (5 + 30 + 42 + 8x + 27 + 10)/(16 + x) = 7, 3
→ (114 + 8x) = (7, 3)(16 + x)
→ 114 + 8x = 116,8 + (7, 3)x
→ (0, 7)x = 2, 8
→ x = 4