Question

write the numbers 3, 4, 5, 6, 8, 9, 10 and 11
і in the correct places so that each (vertical, Horizontal and diagonals adds up to 21 .
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Answer 1

Step-by-step explanation:

AC = BD ( Diagonals bisect each other )

→ OA = y + 4 and OC = 2y - 3 ( given )

→ ( y + 4 ) = ( 2y - 3 )

→ 4 + 3 = 2y - y

→ 7 = y

Therefore , the value of y = 7

Answer 2

Step-by-step explanation:

AC=BD(Diagonals bisect each other)

Oa =y+4 and OC=2y-3(given)

(y+4) = 2y+3

4+3=2y-y

7=y

Therefore, the value of y=7