(x+13)+27-(40+2)=37
x + 13 + 27 – 40 – 2 = 37
x = 37 + 2 + 40 – 27 – 13
x = 39
200+(48-x)+142=343
200 + 48 – x + 142 = 343
– x = 343 – 142 – 48 – 200
-x = -47
x = 47
(x+13)+27-(40+2)=37
x + 13 + 27 – 40 – 2 = 37
x = 37 + 2 + 40 – 27 – 13
x = 39
200+(48-x)+142=343
200 + 48 – x + 142 = 343
– x = 343 – 142 – 48 – 200
-x = -47
x = 47