Question

2+2+2+2+10+20+800=x+1/2

Answer 1

First add 2+2+2+2+10+20+800.

2+2+2+2+10+20+800 = 838

838 = x + 1/2

change 1/2 = 0.5 (as 1 divided by 2 = 0.5)

838 = x + 0.5

isolate the x by subtracting 0.5 from both sides

838 (-0.5) = x + 0.5 (- 0.5)
x = 838 - 0.5
x = 837.5

hope this helps