Question

Help with solving the magic square below ( please provide explanation, upcoming exam )

Answer 1

Ok So first let's find the A B 8 one we already the know 1 value so let's write it in algebraic expression which is:

8 + x + x + 1 = 15

2x + 9 = 15

2x = 15 - 9

2x = 6

x = 3

3 + 1 = 4

8 + 4 + 3 = 15

So Currently A is either 4 or 3 let's try with 4 first.

9 + 4 + x = 15

13 + x = 15

x = 15 - 13

x = 2

9 + 4 + 2 = 15

now, E is 2

7 + 2 + x = 15

9 + x = 15

x = 15 - 9

x = 6

7 + 2 + 6 = 15

now, F is 6

6 + 8 + x = 15

14 + x = 15

x = 15 - 14

x = 1

8 + 6 + 1 = 15

now, D is 1 and C is 5

I'm not gonna check diagonals Bit I'm pretty sure they will be correct so yeah A Is 4