How do you solve and check your solutions to -21=-3/5t?
1 Answer
Apr 15, 2017
Explanation:
Our main goal here is to make
We can start by writing what is on the left hand side as a fraction.
(-21)/1=-3/5t
Now let's cross product or cross multiply to get rid of the fractions
-21xx5=1xx-3t
Simplify
-105=-3t
Divide both sides by
(cancel(-)105)/(cancel(-)3)=(cancel(-3)t)/(cancel(-3)
t=105/3=(cancel3xx35)/cancel3
rArrt=35
To check, you simply substitute
-21=-3/5t, t=35
-21=-3/5xx35
-21=-105/5
Cross product
-21xx5=-105
-105=-105
BAM!