Answer: -3/74
Step-by-step explanation:Maybe easiest way is a calculator but Have a brilliant day of learning!
https://www.calculatorsoup.com/calculators/math/mixednumbers.php
this site is a fraction calculator, it what i use try it!
2/3+4/9
denominator= 3*9=27
numerator = (18+12)= 30
therefore the answer is 30/27= 10/9
Answer:
C = 10
Step-by-step explanation:
+
= 
+
= 100
= 10
We are given a system of equations,

This will translate into a 2x2 matrix of coefficients (because 2 equations and 2 unknowns),

The matrix will then be applied to the vector (lower dimensions on top),

And the result vector will be whats on the other side of equals sign,

So to put everything together,

Hope this helps :)