Because the last equation already has the y eliminated so just need to get the other two to eliminate the y too
multiply 4 to the first equation to eliminate y, and you get
-4x-4y-4z=-32
-4x+4y+5z=7
now get rid of y so all you have left is
-8x+z=-25 (let call this equation #4)
now take equation #3 and #4 together to solve for one of the variables, i’ll solve for z first so i’ll get rid of x by multiply the equation #4 all by 4, you get
8x+8z=16
-8x+z=-25
solve it and get 9z= -9; z=-1
now you have z so take it and ply it into equation #3
2x+2(-1)=4
2x=6; x=3
take both of them, plug it in equation #1
-3-y-(-1)=-8
-y=-6 ; y=6
done so the answer is (x,y,z) = (3,6,-1)
Answer:
Simplifying
4y + 3 = 5x + -7 + 3x + 17
Reorder the terms:
3 + 4y = 5x + -7 + 3x + 17
Reorder the terms:
3 + 4y = -7 + 17 + 5x + 3x
Combine like terms: -7 + 17 = 10
3 + 4y = 10 + 5x + 3x
Combine like terms: 5x + 3x = 8x
3 + 4y = 10 + 8x
Solving
3 + 4y = 10 + 8x
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '-3' to each side of the equation.
3 + -3 + 4y = 10 + -3 + 8x
Combine like terms: 3 + -3 = 0
0 + 4y = 10 + -3 + 8x
4y = 10 + -3 + 8x
Combine like terms: 10 + -3 = 7
4y = 7 + 8x
Divide each side by '4'.
y = 1.75 + 2x
Simplifying
y = 1.75 + 2x
<h2>
i hope that helps </h2>
Answer:
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The only ones are on the "diagonal", where i = j. Else the position is simply the sum.
F.
Step-by-step explanation:
sorry i gusstn guesst it
Answer:
20
Step-by-step explanation:
