19 - Solving For a Specified Variable

[Abynoe88]

Can you help me with this please: xy-z=yz for y

[cupRAWRcake]

OHMYGOD. Thank you sooo much, i was having a really hard time on my math h.w & this really helped! (:

[luisrock2008]

why are all the good teachers on youtube and the complicated ones in my school

[Fadaldo]

Thanks SO much

[2000blackthorns]

what about a variable that dosent have any numbers Ex.

y = mx + b solving for m is this even possible???

[Starflite07]

These videos have helped me SO much!

Thank you again!!!!!!!!!!!

[deadlistmexican]

thanks man i have a math exam tomorrow and i was goin through review u saved the day

[nillajenn]

2 questions:

F = T - Mg

Why is the "T" eradicated first instead of M?

How/ why does M become a negative?

[wmbosques]

What if you have the same variable to solve for on both sides of the =? How do you know which side to solve for the variable?

[sanchezblackwolf]

could you help me with this please? -3x + b = 6x solve for x i dont understand it completley

[Alexander507]

Thanks man :)

[lillady717]

THANK YOU so much.!

Your video helped me ALOT when it came to the elementary algebra on the accuplacer test..!

[ImmortalProject]

Hey, I'm havinbg problems with my math homework. What is (2b)^-5?

[Nunnayabz]

can you show how to do a problem like this can you show like 3 or so I am really having a hard time with this and I really appreciate it I love the way you teach my teacher is ugh!

2[-(x-1)+4]=5+[-(6x-7)+9x]

[Nunnayabz]

nice, thanks again

[TheLegendMan153]

Can you help me with this equation:

u=F(P/T-E)

[redrockscc]

Sure! What variable do you need to solve for?

[TheLegendMan153]

Here:

u=F(P/T-E)

[redrockscc]

Do you need to solve for E, T, P of F?

[TheLegendMan153]

Solve for P

[redrockscc]

Cool so if we distribute F, we get

u = F*P/T - E*F

Now, there's only one term with P in it - get that term by itself by adding E*F.

u + E*F = F*P/T

Now, we just have to multiply by T and divide by F to solve for P:

T/F(u + EF) = P

You can distribute the T/F if you want to, but we solved for P, so the problem is finished!

Just a note: This problem is very different if it's

u = F(P/(T-E))

[TheLegendMan153]

Thanks alot.

[redrockscc]

So let's say the equation was

2xy + xz = 4

and we're solving for x. Since we have all of the x's on the same side of the equation, we can factor out an x.

x(2y + z) = 4

Now to solve for x, we can divide by the factor in parentheses:

x = 4 / (2y + z)

[UPMXIV]

What if there are two terms with the same variable?

PS: Reply BEFORE the 23 of September, thanks!