Answer:
Explanation:
1. (X=3, y=7)
Use the elimination method and multiply the top row by 3 to eliminate your x's.
3x+24=177
-3x+10y=61
34y=238 ( y=7), plug 7 into the original equation x + 8 (7)=59 solve x+56=59. Subtract 56 from both sides and (x=3)
2. (x=-4, y=10)
Problem 2 you would use the substitution method
Step 1 = -4x-6=6x+34.
Step 2= Solve for X. 10x=-40 therefore, x=-4
Step 3. Once you have x plug it back in to any of the original equations and get Y
Step 4: y=-4 (-4) -6. Y=16-6, therefore y=-0
3. (x=-4, y=3)
Use the substitution method:
Step 1: Plug y=-3x-9 into 4x +4y=-4
Step 2: 4x+ 4(-3x-9)=-4
Step 3: 4x-12x-36=-4
Step 4: Combine like terms -8x-36=4, add 36 to the right side
Step 5: -8x=32. Therefore when you divide by -8 (x=-4)
Step 6: Plug x=-4 into y=-3x-9
y=-3 (-4)-9 y=12-9. Therefore (y=3)