Answer:
Step-by-step explanation:
The expression shows the sum of two terms. The first term has coefficient 1. The second term is the product of 12 and x.
In these types of problems, the first step is to combine like terms. Like terms are terms with the same exponent (power), and the same variable (like all x's). In the above equation, we can combine -5x, 2x and -3y. Let's do it:

The next step would be to factor out the common ratio, which is not applicable here, so your answer would be
-6x + 7y. Hope this helps!
3.14*d
3.14*12= 37.68
Rounded to the nearest hundredth would be 37.7