I do not know set notation. When multiplying/dividing both sides of an inequality by a negative, reverse the carat.
-7y > 56
y < -8
-8x + 10 < 2x - 20
-10x < -30
x > 3
Here are a few problems I need solving Make sure to show a check for the solution and write the solution in set notation like {x|x>5}:
Solve for y
-7y-14>42
Solve for x
-2(4x+5) < 2x-20
2 answers
I goofed with a sign. It should be:
-8x - 10 < 2x - 20
-10x < -10
x > 1
-8x - 10 < 2x - 20
-10x < -10
x > 1