Answer:
x=2 and y=7
Step-by-step explanation:
Let x and be the unknown numbers.
By the condition given in the question the first equation is
x+y=9
And the second equation is
x-y=-5
By solving the first and second equations,we get the answer as
x=2 and y=7
Answer:
(2,24) (1,18) (3,30) (4,36)
Step-by-step explanation:
Answer:
Different scientists might perform the experiment differently
Step-by-step explanation:
Step-by-step explanation:
-7(y-1)= 21
-7y+7=21
-7y=21-7
-7y=14
divide by-7
y=-2