It’s -10
Explanation: 8 x 5= 40
40/-4= -10
        
                    
             
        
        
        
1/2×4=4/8
1/8=1/8
1/4×2=2/8
so 4/8+2/8=6/8
and 6/8+1/8=7/8
so 7/8 ribbons will be collected
        
                    
             
        
        
        
The solutions to the given system of equations are x = 6 and y = -5
<h3>Simultaneous linear equations</h3>
From the question, we are to solve the given system of equations
 
The given system of equation is 
4x+5y=-1 
-5x-8y=10 
Multiply the <u>first equation</u> by 5 and the <u>second equation</u> by 4 
5× (4x+5y=-1)
4× (-5x-8y=10)
20x + 25y = -5
-20x - 32y = 40
------------------------
0x + (-7y) = 35 
-7y = 35 
y = 35/-7
y = -5
Substitute the value of y into the first equation to find x
4x + 5y = -1 
4x + 5(-5) = -1 
4x -25 = -1
4x = -1 +25 
4x = 24
x = 24/4
x = 6
Hence, the solutions to the given system of equations are x = 6 and y = -5
Learn more on Simultaneous linear equation here: brainly.com/question/12647791
#SPJ1
 
        
             
        
        
        
Answer:
4
Step-by-step explanation: