How to solve this problem by elimination 3x+y=17 4x+2y=20

1st you have to find what x, and y is
2nd re write the problem 
3rd solve it 

For elimination, you need to eliminate one of the variables by subtrating the two equations.
To do that, you need to multiply the equation 3x+y=17 by 2, which becomes 6x + 2y = 34.

Now you can subtract, but also multiply 6x+2y=34 by -1 so you can subtract:
4x + 2y = 20
-6x - 2y = -34

-2x + 0 = -14
x = 7

Now that you know x=7, plug it back in to one of the original equations to solve for y.
4x + 2y = 20
4(7) + 2y = 20
28 + 2y = 20
2y = -8
y = -4

$1,440

Step-by-step explanation:

Given:

Borrowed amount by west company from valley bank = $48,000

Interest is paid annually = 9% per year

Time period = From 1st September to 31st December

                    = 4 months

The note issued by West carried an 18-month term.

Therefore,

Interest expense = Principal amount × Rate × Time period

                            = $48,000 × 9% × (4 ÷ 12)

                            = $48,000 × 0.09 × (1 ÷ 3)

                             = $1,440

Therefore, the amount of interest expense that will be reported on West's income statement for Year 1 is $1,440.