Given: -7x < -21. choose the solution set. {x | x < -3} {x | x > -3} {x | x < 3} {x | x > 3}

step-by-step explanation:

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like: