Is -10 a solution of -4f equals 3of?

Answer 1

Before we start evaluating proposed solutions, let's examine the equation for just a second:

-4f = 30f

Divide each side of the equation by ' f ' :

-4 = 30

If that just doesn't look right to you, you're on to a valuable insight. You may be

tempted to say that the equation can't have any solution, because -4 can't be equal

to 30. But there is actually one solution . . . [ f = 0 ].

If [ f = 0 ], then by gosh, -4f is actually equal to 30f .

And no, ' f ' can't be -10 .