For example:
x+2y=7
6x+7y=2
__________
x=7-2y *
6*(7-2y)+7y=2 **
__________
x=7-2y
42-12y+7y=2
__________
x=7-2y
-5y=-40
__________
x=7-2y
y=8
x=-9
        
             
        
        
        
Answer:
B
Step-by-step explanation:
 
        
             
        
        
        
3x to the third=180
third root 3x to the third =third root180
        
             
        
        
        
Answer:
Y= 3
Step-by-step explanation:
RS=ST
9y+3=3y+5