How do you solve P= \frac { b } { d + t } for t?
2 Answers
Jan 28, 2017
Explanation:
-
Cross multiply
P andd+t to get:
d+t =\frac {b} {P} -
To make
t the subject, substractd (moved to the other
side!) :
t =\frac {b} {P} -d
Jan 28, 2017
Explanation:
We can
color(blue)"cross multiply" to 'eliminate' the fraction.We treat equations with letters only
color(blue)"literal equations" in exactly the same way as normal equations.
rArrP/1=b/(d+t)
rArrP(d+t)=b divide both sides by P
(cancel(P) (d+t))/cancel(P)=b/P
rArrd+t=b/P To solve for t, subtract d from both sides.
cancel(d)cancel(-d)+t=b/P-d
rArrt=b/P-d" is the solution"