Types of gravel include: 1  Bank gravel: naturally deposited gravel intermixed with sand or clay found in and next to rivers and streams. 2  Bench gravel: a bed of gravel located on the side of a valley above the present stream bottom, indicating the former location of the stream bed when it was at a higher level.
1 is the sixth part of 6. 2 is two sixths, and also the third part, of 6. 3 is three sixths, and also half of 6. 4 is four sixths, and also two thirds, of 6. is the sixth part of 6. 2 is two sixths, and also the third part, of 6. 3 is three sixths, and also half of 6. 4 is four sixths, and also two thirds, of 6.
1 third + negative 2 fifths = 1 third times 5 over 5, +, negative 2 fifths times 3 over 3, which is equal to 5 over 15 + negative 6 over 15, which is equal to the fraction with numerator 5 + negative 6, and denominator 15, which is equal to the negative of the fraction 1 over 15.