Answer:
-7w
Step-by-step explanation:
-2w-5w
-2w + (-5w)
-7w
Answer:
what is it over?
Step-by-step explanation:
you have to be more specific
Answer:
-1
Step-by-step explanation:
the additive inverse of -5is5 because (-5+5=0) &
the multiplicative inverse of -5is 1/-5. because (-5*1/-5=1)
therefore 5*1/-5=5/1*1/-5
=5/-5
=-1
Answer:
10
Step-by-step explanation:
Just multiply the 5 to the 10 and -8
50-40
10
Y - 3x = 7 . . . . . . . . (1)
21 + 9x = 3y . . . . . .(2)
From (1), y = 3x + 7
substituting for y into (2), we have
21 + 9x = 3(3x + 7) = 9x + 21
0 = 0
Therefore, the system has an infinte number of solutions.
