Answer:
x = 7 and y = 0
Step-by-step explanation:
We can either solve by substitution method or by elimination method or both method . We will solve by both the elimination and substitution method.
X+y=7 ---------------------------------------------------(1)
-x+y=-7 -------------------------------------------------(2)
Subtract equation (2) from equation(1)
2x = 14
Divide both-side of the equation by 2
2x/2 = 14/2
x = 7
Substitute x = 7 into equation (1)
x+y=7
7 + y = 7
Subtract 7 from both-side of the equation
7-7 + y = 7-7
y = 0
x = 7 and y =0
Any fraction that would simplify down to -3/7
Remember, what you do to the denominator, you must do to the numerator.
For example:
-6/14 is an answer choice, for: (-6/14)/(2/2) = (-3/7)
Hope this helps
Answer: Y= 1/2x +2
Step-by-step explanation:
Answer:
560 students
Step-by-step explanation:
1400*.40=560 students in 6th grade
= 
