+0

0
238
2

Find all prime numbers.

Aug 2, 2020

#1
+337
+2

What is that!?!?!?!?

Aug 2, 2020
#2
+22082
0

(2/3)(x - 2)  <  (1/2)(x + 1)  < (3/4)(5x + 6)

Multiply through by 12:   --->   8(x - 2)  <  6(x + 1)  <  9(5x + 6)

Simplify:                                   8x - 16  <   6x + 6   <  45x + 54

Add 16:                                           8x  <   6x + 22  <  45x + 60

Because x is a positive number:  6x + 22  will always be less than  45x + 60; so we can ignore the far

right-hand side.

Solving:  8x  <  6x + 22

2x  <  22

x  <  11                     --->     x = 2, 3, 5, 7

Aug 2, 2020
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