Answer:
x=6,y= 7
Step-by-step explanation:
-6x +7y= 13
-6x+8y=20
-y = -7
divide through by -1
y =7
sub y= 7 in equation 1
then x= 6
Answer:
The second one. The -2y should have been +2y
Step-by-step explanation:
a negative multiplied by a negative gives you a positive
Answer:
boom ganag
Step-by-step explanation: