Question

solve for x: -2x + 5 < 7
1. x > -1
2. x < -1
3. x > -6
4. x < -6

Answer 1

isolate x on one side of equation
solve like a equation
-2x+5 < 7 lets subtract 5 both sides

-2x+5-5 < 7-5
-2x < 2 now lets divide both sides by -2

**** when multiplying or dividing by a negative we must change the direction of greater or lesser sign***

so
-2x/2 < 2/-2 now change

x>-1

now check 0 is greater than -1 so plug it in

what did you get??

Answer 2

x>-1