6+9x<42
Solve as if it were an equation:
6+9x<42
9x<42-6
9x<36
x<4
except that we have to reverse the direction of the inequality if we multiply or divide by a negative quantity on both sides (which is not the case here).
6+9x<42
9x<42-6
9x<36
x<4
except that we have to reverse the direction of the inequality if we multiply or divide by a negative quantity on both sides (which is not the case here).