4,000,000-[(300,000)+x] = 147,000
Divide both sides by 1000 to get rid of confusing extra zeros.
4000 - (300 + .001x) = 147
Get rid of parenthesis.
4000 -300 - .001x = 147
Combine terms and multiply by -1.
.001x = 3553
Multiply by 1000.
x = 3,553,000