+130511 (-1/2)(b)-3 ≥ 9 Add 3 to both sides
(-1/2)b ≥ 12 Multiply both sides by -2 and reverse the inequality sign (we must always do this when multiplying or dividing an inequality by a negative).....so we have....
b ≤ -24 Let's check this in the original problem by choosing some number less than or equal to -24 ...... -30 should work, if we're correct !!
(-1/2)(-30) - 3 ≥ 9
15 - 3 ≥ 9
12 ≥ 9
Yep....it looks OK !!!
+130511 (-1/2)(b)-3 ≥ 9 Add 3 to both sides
(-1/2)b ≥ 12 Multiply both sides by -2 and reverse the inequality sign (we must always do this when multiplying or dividing an inequality by a negative).....so we have....
b ≤ -24 Let's check this in the original problem by choosing some number less than or equal to -24 ...... -30 should work, if we're correct !!
(-1/2)(-30) - 3 ≥ 9
15 - 3 ≥ 9
12 ≥ 9
Yep....it looks OK !!!
