Algebra · real student question

Solve the inequality 25 - 3(n - 2) >= -8n + 6.

Question

Solve the inequality

253(n2)8n+625-3(n-2)\ge -8n+6

Step-by-step solution

  1. Distribute the -3, watching the second sign. 3n=3n-3\cdot n=-3n and 3(2)=+6-3\cdot(-2)=+6, so the parentheses open to

    253n+68n+625-3n+6\ge -8n+6

  2. Combine the constants on the left. 25+6=3125+6=31:

    313n8n+631-3n\ge -8n+6

  3. Add 8n to both sides. This gathers the variable on the left with a positive coefficient, so no direction flip will be needed later:

    31+5n631+5n\ge 6

  4. Subtract 31 to isolate 5n.

    5n255n\ge -25

  5. Divide by the positive 5. Since 5>05>0 the \ge survives untouched, and 25-25 is divisible by 55, so the bound is a clean integer:

    n5n\ge -5

    This is the structural difference from the 2-2 version of the same problem, where the bound comes out as 236-\tfrac{23}{6}.

  6. Verify the boundary and both sides of it. At n=5n=-5: left =253(7)=46=25-3(-7)=46 and right =40+6=46=40+6=46 — equality holds ✓. At n=0n=0 (inside): 25+6=31625+6=31\ge6 ✓. At n=6n=-6 (outside): left =253(8)=49=25-3(-8)=49, right =48+6=54=48+6=54, and 495449\ge54 is false ✓, confirming the solution set is exactly [5,)[-5,\infty).

Answer

n5n\ge -5

Need to solve a different problem like this? Open the solver →