Question

translate the word phrases into mathematical expression.
1. Three times a number is added to the difference of a number and 3.
2. Two times a number is subtracted from twice the number.

Answer 1

Answer:

1. Let the first number be x and the second number be y

3x + ( x - y ) = 3

2. Let the first number be m and second number be n

2m - 2n Or 2 ( m - n )

Answer 2

translate the word phrases into mathematical expression.

1. Three times a number is added to the difference of a number and 3.

Answer: 3a + (a-b) = 3

2. Two times a number is subtracted from twice the number.

Answer: 2x - 2x