How do you solve 0.06x + 0.03(4000 - x) = 1530.06x+0.03(4000x)=153?

1 Answer
Mar 4, 2016

x=110x=110

Explanation:

0.06x+0.03(4000-x)=1530.06x+0.03(4000x)=153

Start by distributing 0.03.

0.06x+120-0.03x=1530.06x+1200.03x=153

Next, move the equation around to get numbers on one side and letters on the other. Don't forget to change their signs when moving them onto their opposite sides (ie: negative to positive or positive to negative). In this case, I had to move 120 over to the right side of the equation and change its sign to negative.

0.06x-0.03x=153-1200.06x0.03x=153120

Simplify your equation on both sides.

"0.03x"/0.03=33/0.030.03x0.03=330.03

Divide by 0.03 to get x by itself.

x=110x=110

You now have your final answer! :)