maths problem ininequalities?

Question

solve the inequality

(r+1)/3

Answer 1

(r + 1) / 3 <= r - 2

First, multiply both sides by 3.

(r + 1) <= 3(r - 2)
r + 1 <= 3r - 6

Move all r terms to the left hand side; everything else to the right hand side.

-2r <= -7

Now, divide both sides by -2. This flips the inequality.

r >= 7/2

Answer 2

( r+1 ) / 3 < or equal to r - 2

3( r+1 ) / 3 < or = 3 ( r - 2 )

r + 1< or = 3r - 6

- 2r < or = 7

-2r / -2 < or = 7 / -2

r < or = - 7/2