To begin solving this system of linear equations by elimination, you can add
the equations.
3x + 4y = 38
5x - 4y = -30
8x = 8
this step works because of the

see explanation

Step-by-step explanation:

Given the 2 equations

3x + 4y = 38 → (1)

5x - 4y = - 30 → (2)

Since the coefficients of the y- term are opposites then adding the 2 equations will eliminate the term in y, that is

Add (1 ) and (2) term by term

(3x + 5x) + (4y - 4y) = (38 - 30), simplifying

8x = 8 ( divide both sides by 8 )

x = 1

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right

step-by-step explanation:

de-gf

hj=3x+20

ji=15x-64