Answer:
A) The solution set is (6,-8).
Step-by-step explanation:
3x - y = 26
-3x       - 3x        Subtract 3x from both sides
-y = -3x + 26     Divide both sides by -1
y = 3x - 26
Now plug this into 7x + 8y = -22 to solve for x
7x + 8(3x - 26) = -22        Distribute
7x + 24x - 208 = -22       Combine like terms
31x - 208 = -22
      + 208    + 208            Add 208 to both sides
31x = 186                           Divide both sides by 31
x  = 6
Plug this into y = 3x - 26 to solve for y
y = 3(6) - 26           Multiply
y = 18 - 26              Subtract
y = -8
If this answer is correct, please make me Brainliest!
 
        
             
        
        
        
6000 - 1800 = 4200
4200/4 = 1050
so she donated 25% to charity
        
             
        
        
        
Let’s find the area of Ells room.
78•96
7,488
Let’s find Sarah’s room.
66•108
7,128
Now add their area together.
14,616 inches squared.
        
             
        
        
        
             rs + st = rt     Plug in the values
3x + 1 + 2x - 2 = 64   Combine like terms (1 and -2)
       3x -1 + 2x = 64   Combine like terms (3x and 2x)
            -1 + 5x = 64   Add 1 to both sides
                  5x = 65   Divide both sides by 5
                    x = 13