SOLUTION: 7x+2y=10 -7x+y=-16

Question 401059: 7x+2y=10 -7x+y=-16
Answer by subudear(62) (Show Source): You can put this solution on YOUR website!
7x+2y=10 ...(1)
-7x+y=-16 ...(2)
from equation (2) we get
y = -16 + 7x
replace value of y into equation (1) we get
7x + 2(-16 + 7x) = 10
7x - 32 + 14x = 10
21x = 10 + 32
x = 42/21
x = 2
replace value of x in equation (1) we get
7(2) + 2y = 10
2y = 10 -14
y = -4/2
y = -2
so solution for both the equations is x = 2, y = -2

RELATED QUESTIONS
7x+2y=10... (answered by mathjames)

7x+2y=10... (answered by Alan3354)

I need help please! I don't understand this. The problem is: 7x+2y= 10 -7x+y=... (answered by mananth)

7X + 3Y = 14 , 5X + 9Y = 10 4X + Y = 16 , 2X + 3Y = 24 12X + Y = 25 , 8X... (answered by Edwin McCravy)

I need the answer and need to know how you got the answer for a solving systems... (answered by Edwin McCravy)
Use the elimination method to solve the given system of equations.  Please show all work
 (answered by jim_thompson5910)
y=7x-10... (answered by MathLover1)
(-5,1) slope= -8... (answered by Alan3354)
{{{ 5x-y=10}}}
{{{ 7x-2y=11}}}


Help me please!!!... (answered by checkley71)