How do you solve the simultaneous equations #3r - 2t = -0.2# and #r + s = 2.4#?
1 Answer
You can not solve for the values of 3 variables with only 2 equations;
however, if the second equation was meant to be
Explanation:
The best we could do with 2 equations with 3 unknowns is generate a linear relationship between two of the variables:
For example, by solving for
and
So
If however the equations were meant to be (in only two variables):
[1]
[2]
Multiplying [2] by 2:
[3]
Adding [1] and [3]
[4]
Dividing by 5
[5]
Substituting
[6]
Subtracting
[7]