Approximately the answer is by using the calculator IS
Answer:
1300
Step-by-step explanation:
Let the amount put in the station's tank = x
4(400 + x) = 8100 - x Remove the brackets
1600 + 4x = 8100 - x Subtract 1600 from both sides
1600 - 1600 + 4x = 8100 - 1600 - x Do the subtraction
4x = 6500 - x Add x to both sides
4x + x = 6500 - x + x
5x = 6500 Divide by 5
5x/5 = 6500/5
x = 1300
1300 gallons were added to the station's tank.
The answer is 4 + 17p, first distribute 2p(p3+5) which the result is 2p times 6p plus 10p and you end up p4 - 5p + 2p(6p) + 10. Then you combine like terms and you end up p4 -5p + 12p + 10p, and repeat the move (combine like terms) and you end up with p4 + 17p. Then again you combine like terms and you end up 4 + 17p. If your wondering what happened to the p well the p is exactly like multiplying anything by 1.
The like terms in this problem are the 10x and the 3x, as well as the 5 and 1. The 10x and 3x combine to get 13x, and the 5 and 1 add to make six.
