Solve for y:
Here you can choose which side of the inequality to get the variables on. It's really up to you and whatever way makes more sense. In this problem, we will move the variables to the left side.
Since we divided each side by positive 4, we do not switch the > to <.
To check, we need to pick a number greater than 2.5 and plug it into the original inequality. Let's try 4.
Well, 14 is greater than 4, so we are all good!
Solve for x:
Just like with equations, we need to get the variable out of the denominator. We start by multiplying each side by (x-1).
Since we divided each side by negative 4, we switched the sign from ≥ to ≤.
To check, plug in any number greater than or equal to -½. Since it can equal -½, let's plug that in.
-2 is greater than or equal to -2!
Solve for z:
First multiply each side by -3.
We switched the sign in the second step since we multiplied by a negative number.
z ≥ -20, so check by plugging in any number ≥ -20, like 0.
-⅔ is smaller than 6!
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