help please

[senthi]

18(37)15 23(43)16 29( )16

can anyone explain the work out please?thankyou

[dams]

Add the two outside numbers together and then add 4

18+15+4 = 37
23+16+4 = 43

29+16+4 = 49

[patricia]

Dear Senthi

Please could you keep all queries relating to these bracket maths to one thread.

When I have some time will merge all your threads into this one.

Thank you

Patricia