If a math book is 4,458 grams what is the mass of 4 math books in kilograms

The weight of 4 math books is 17.832 kilograms.

Step-by-step explanation:

Given:

weight of math books = 4458 grams

number of math books = 4

1 kg = 1000 grams

4458 grams * 1kg/1000 grams = 4458 kg/1000 = 4.458 kg

4.458 kg * 4 books = 17.832 kg

OR

4458 grams * 4 books = 17832 grams

17832 grams * 1kg/1000 grams = 17832 kg/1000 = 17.832 kg

17.832 kg

Step-by-step explanation:

4 * 4458g = 17832g

17832g * 1kg/1000g= 17.832 kg

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w

x-3y=4

step-by-step e