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: 0.85 L or 
or 
Step-by-step explanation:
Since, According to the question,
Landen spent time at the beach last weekend = L hours
And, Matéo spent 15% fewer hours at the beach than Landen did.
Therefore, Number of hours spent by Matéo = (Time spent by Landen last week - 15 % of the Time spent by Landen last week ) hours
= 85% of the Time spent by Landen last week
= 
= Hours
= Hours
= 0.85 L Hours
Answer:
y=x-1
Step-by-step explanation:
All you must do is subtract the two numbers, 50.01 minus 19.56 equals 30.45.
Hope this helps, if not, comment below please!!!!
