(26+37+x)+(44-13-18)-16-18-26=51
26 + 37 + x + 44 – 13 – 18 – 16 – 18 – 26 = 51
x = 51 + 26 + 18 + 16 + 18 + 13 – 44 – 37 – 26
x = 35
(26+37+x)+(44-13-18)-16-18-26=51
26 + 37 + x + 44 – 13 – 18 – 16 – 18 – 26 = 51
x = 51 + 26 + 18 + 16 + 18 + 13 – 44 – 37 – 26
x = 35