Question

Which of the following expressions are equivalent to the expression 3x + 4 - 5x + 6 - 2? Select all that apply.
*
-2x + 8
4 - 2x + 4
8x +8
-2x + 10 - 2
-2x + 12

Answer 1

Simplify the expression to have fewer terms 11x - 4y - 2(2x +2y)
*
7x
7x - 8y
15x - 8y
7x - 2y

Answer 2

What is the sum? 8/5 + (- 5/9)
*
97/45
3/4
47/45
4/3

Answer 3

-2x + 8
-2x + 12

Answer 4

11x - 4y - 2(2x + 2y)

= 11x - 4y - 4x - 4y

= (11x - 4x) + (-4y - 4y)

= 7x - 8y

Therefore, the simplified expression is 7x - 8y.

Answer 5

To find the sum of fractions, we need to have a common denominator.

The least common multiple of 5 and 9 is 45.

Converting the fractions to have a denominator of 45, we get:
(8/5) * (9/9) = 72/45
(-5/9) * (5/5) = -25/45

Now adding the fractions:
72/45 + (-25/45) = 72 - 25 / 45 = 47/45

So, the sum is 47/45. The correct option is 47/45.