Question

Solve for A: B=5/7(A-11)

Answer 1

\(B=\dfrac{5}{7(A-11)}\)

Is this correct?

Answer 2

\[B=\frac{ 5 }{ 7 }(A-11)\]

Answer 3

Even easier :P

Answer 4

First I would divide each side by \(\dfrac{5}{7}\)

\(\dfrac{7B}{5}=A-11\)

Then you add 11 to both sides,

\(\dfrac{7B}{5}+11=A\)

Make sense? :)

Answer 5

why is the 7 become the numerator?

Answer 6

\[A=\frac{ 5 }{ 7 }B+11\] so is this the answer?

Answer 7

Because when you divide by a fraction, you are multiplying by the reciprocal.

Lets say you want to do this,

\(\dfrac{1}{2}\div\dfrac{3}{4}\)

To be able to do this operation you need to multiply the half by the reciprocal of three-fourths.

\(\dfrac{1}{2}\times\dfrac{4}{3}\)

Which then leads us to the answer,

\(\dfrac{4}{6}=\dfrac{2}{3}\)

Understand?