MAT222: Intermediate Algebra Discussion 1/2



MAT222: Intermediate Algebra Discussion 1/2

Compound Equality 1

-1 = -3 + 2x < 17

3 -1 = 2x < 17 +3

2 = 2x < 20

2/2 = x < 20/2

1 = x < 10

Solution Set = {1} n {x< 10}

Compound Equality 2

7 - x = 6 or 7x - 1 > 27

7 - x - 6 = 6 - 6 or 7x - 1 + 1 > 27 + 1

1 = x or 7x > 28

1 = x or 7x/7 > 28/7

X = 1 or x > 4

The solution is {1} and all the real numbers greater than 4 ...