Solve the following system of equations using elimination.
- 8x + 5y = 9
-9x - 4y = -38

- 8x + 5y = 9

Step 1: Add -5y to both sides.

−8x+5y+−5y=9+−5y

−8x=−5y+9

Step 2: Divide both sides by -8.

−8x/−8 = −5y+9/−8

x=5/8y + −9/8

x=5/8y +−9/8

-9x - 4y = -38

Step 1: Add 4y to both sides.

−9x−4y+4y=−38+4y

−9x=4y−38

Step 2: Divide both sides by -9.

−9x/−9 = 4y−38/−9

x=−4/9y + 38/9

x=−4/9y + 38/9

step-by-step explanation:

i'm pretty sure it would take 20 hours because it's half the men so you multiply the number of hours it takes by 2