Solve –2k + 12 < 30 for k.

k<-9

Step-by-step explanation:

First you want to isolate the variable, or k in this case. So you will subtract 12 on both sides which will leave you with -2k<18. Then you will divide both sides by -2. Which turns into k>-9. But since you divided by a negative, the sign changes, so the answer would be k<-9.

Step-by-step explanation:

Definitions:

Coefficient: A number right in front of the variable.

Ex: 4x

Distributive property : Is when you distribute a number or variable into the equation.

Ex: 3(10+2)

3(10)=30

3(2)=6

30+6

36

Constant: A number that never changes.

Ex:

5x+4=9

The constants are 4 and 9. So they stand alone with no exponents or variables.