The inequlaity is .
Apply addition property of inequality: Add 7 to each side.
(Apply additive inverse property: )
(Apply additive identity property: )
(Add: 21 + 7 = 28)
Apply division property of inequality: Divide each side by 4.
(Cancel common terms)
(Divide: )
Check:
To substitute a number greater than or equal to 7 in .
(Substitute a = 7)
(Multiply: )
(Subtract: )
The inequality is true
The inequality solution set is .
"I want to tell you that our students did well on the math exam and showed a marked improvement that, in my estimation, reflected the professional development the faculty received from you. THANK YOU!!!" June Barnett |
"Your site is amazing! It helped me get through Algebra." Charles |
"My daughter uses it to supplement her Algebra 1 school work. She finds it very helpful." Dan Pease |