Answer:
x= -2 y= -1
Step-by-step explanation:
stack the 2 equations on top of each other and add them together
the 2x and -2x cancel out and you are left with -9y=9
this gives you y= -1
you plug the y value into one of the equations:
2x - (-1) = -3
2x+1 = -3
2x= -4
x= -2
2194/10000 using prime factorisation method
Answer:
-4
Step-by-step explanation:
Adding 21 and -21 cancel each other out so you're left with -4
Answer:
It's b as far as I know.
Step-by-step explanation:
cause you should trust me because you only have 30 mins
