Me pueden ayudar a resolver por método de sustitución porfa.
{5x+7y=-1
{-3x+4y=-24 
       
      
                
     
    
    
    
    2  answers:
            
              
Answer: 
La solución del sistema de ecuaciones es (The solution for the system of equations is):
Step-by-step explanation: 
La resolución del sistema de ecuaciones por el método de sustitución se presenta a continuación (The solving of the system of equations by substitution method is presented hereafter):
Entonces, (Then,)
 
                                
             
                    
              
Answer:
x = 4 and y = -3
Question;
Me pueden ayudar a resolver por método de sustitución porfa.
Translation: Can you help me to solve by please substitution method.
{5x+7y=-1
{-3x+4y=-24
Step-by-step explanation:
Given the simultaneous equation.
5x+7y=-1 .....1
-3x+4y=-24 .....2
From equation 2, making y the subject of formula.
4y = -24 + 3x
y = (-24+3x)/4 ...... 3
Substituting the equation 3 into equation 1
5x+7((-24+3x)/4) = -1
Multiply through by 4
20x + 7(-24+3x) = -4
20x - 168 + 21x = -4
41x -168 = -4
41x = -4 + 168
41x = 164
 x = 164/41 = 4
x = 4
Substituting x = 4 into equation 3
y = (-24+3(4))/4
 y = (-24+12)/4
y = -12/4
y = -3
 
                                
             
         	
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Answer:49
Step by step is 56÷16=3.5
14x3.5=49