You can solve it as 3*500+3*80+3*4. It the same as solving it normally, since you're essentially solving it as above (one place value at a time).
To achieve balance, the momentum on both sides must be
equal so that it cancels out. Momentum is simply the product of mass and
distance, therefore:
50 pounds * 6 ft = 100 pounds * X
X = 3 ft
Hence B must be placed 3 ft from the pivot.
When adding decimals you would line up the decimal points and fill blank spots with zeros.
so...
0.654
+ 0.450
⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻
<u>1.104</u>.
