1. Simplify Each of the following:

a. the sum of 6x + 2 and -8x + 5

b. the result of subtracting 5x - 17 from 8x + 12

c. the product of 7x and 4x - 9

2. Solve 2/3 (3x + 14) = 7x + 6, by the first multiplying both sides of the equation by 3, before applying the distributive property.

Thanks!

Guest Apr 15, 2017

#1**+2 **

1.

a.

6x + 2 - 8x + 5 =

6x - 8x + 2 + 5 =

-2x + 7

b.

{8x + 12 ] - [5x - 17 ] =

8x - 5x + 12 - (-17) =

3x + 29

c. (7x) (x - 9) = 7x * 4x - 7x * 9 = 28x^2 - 63x

2.

2/3 (3x + 14) = 7x + 6 multiply through by 3

2(3x + 14) = 21x + 18 simplify

6x + 28 = 21x + 18 subtract 6x, 18 from both sides

10 = 15x divide both sides by 15 and reduce the fraction

10/15 = x = 2/3

CPhill
Apr 15, 2017