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Question
solve x 7x -16 < 8x +2
Hello Ivelisse,
Inequalities are solved just like equalities, except when multiplying or
dividing by a negative number, we change the direction of the inequality.
So...
7x -16 < 8x + 2, add 16 to both sides
7x < 8x + 18, subtract 8x from both sides
-x < 18, now multiply by -1
x > -18
OK?
Abe
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Answers by Expert:
Abe Mantell
Expertise
Hello, I am a college professor of mathematics and regularly teach all levels from elementary mathematics through differential equations, and would be happy to assist anyone with such questions!
Experience
Over 15 years teaching at the college level.
Organizations belong to
NCTM, NYSMATYC, AMATYC, MAA, NYSUT, AFT.
Education/Credentials
B.S. in Mathematics from Rensselaer Polytechnic Institute
M.S. (and A.B.D.) in Applied Mathematics from SUNY @ Stony Brook
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