Write the phrase "the product of 19 and a number" as a mathematical expression.

Phrase : "the product of 19 and a number"

Mathematical expression : 19A

Step-by-step explanation:

Phrase : "the product of 19 and a number"  

The product of two numbers a and b can be written as a x b =ab

To find Mathematical expression

Let A be a number,  

The product of number with 19 can be written as

19 x A  = 19A

Therefore the given phrase "the product of 19 and a number" as a mathematical expression =19A

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