106k views
4 votes
What value of x is in the solution set of -5x-15>10+20x

User Jaaayz
by
8.2k points

1 Answer

5 votes

-5x-15 > 10+20x\ \ \ \ |+15\\\\-5x > 25+20x\ \ \ \ |-20x\\\\-25x > 25\ \ \ |change\ the\ signs\\\\25x < -25\ \ \ \ |:25\\\\x < -1\to x\in(-\infty;-1)
User Sepang
by
8.5k points