Question

I need help i don't get this​

Answer 1

15 = 3 + 12 (fill in 12)

15 = 10 + 5 (fill in 5)

15 = 6 - -9 (fill in -9)

etc.

Explanation:

Every spoke of the wheel is an addition or subtraction you have to fill in, such that it adds up. The subtraction one is maybe a bit tricky because you have to understand that - - = +.

Answer 2

[ Please see the attachment to understand well. ]

Explanation:

Let the missing numbers be x

Question A.

x - 8 = 15

x = 15+8

x = 23

[23 - 8 = 15]

Question B.

x - 9 = 15

x = 15+9

x = 24

[24 - 9 = 15]

Question C.

x - 2 = 15

x = 15+2

x = 17

[17 - 2 = 15]

Question D.

x + 4 = 15

x = 15 - 4

x = 11

[11 + 4 = 15]

Question E.

x + 9 = 15

x = 15 - 9

x = 6

[6 + 9 = 15]

Question F.

6 - x = 15

-x = 15 - 6

-x = 9

x = -9

[6 - (-9) = 15]

[6+9 = 15]

Question G.

10+x = 15

x = 15 - 10

x = 5

[10+5 = 15]

Question H.

x + 3 = 15

x = 15 - 3

x = 12

[12+3 = 15]

Hope it's helpful !