SOLUTION: Can someone please help....don't know how to solve these problems...have to solve these using the addition or subtraction method.... x+y=8 x-y=2

Algebra.Com
Question 399617: Can someone please help....don't know how to solve these problems...have to solve these using the addition or subtraction method....
x+y=8
x-y=2

Answer by solver91311(24713)   (Show Source): You can put this solution on YOUR website!


You already have one of the variables with additive inverse coefficients -- the coefficient on y in the first equation is 1 and the coefficient on y in the second equation is -1, so just add the two equations, term by term, and the y variable will go away.

x plus x is 2x, y plus -y is 0, and 8 plus 2 is 10. so 2x = 10. Solve for x.


John

My calculator said it, I believe it, that settles it
The Out Campaign: Scarlet Letter of Atheism


RELATED QUESTIONS

Could someone please explain how to do these problems, we are solving problems with two... (answered by ewatrrr,stanbon,solver91311)
Alright, here's my question. I need to find out how to solve the following problem using (answered by stanbon)
How do you solve problems like these 7-3(14)-13 THE ANSWER IS NEGATIVE 48 why is it... (answered by ewatrrr,rfer)
Hi, Can someone please help me? I have to show all my work, and I don't even know how to... (answered by solver91311)
I submitted this question earlier but there was a typo I apologize to whoever read it.... (answered by jim_thompson5910)
What type of problems are these? Can you help me solve? 1 . √ x – 1 = 3 2 .... (answered by stanbon)
Can someone please help me solve these problems, x/14-85>6 and 23>12-x/9? I have no idea... (answered by stanbon,vleith)
I am having trouble with the addition and multiplication principles of solving... (answered by Earlsdon)
I'm not sure how to do these can I please get help? 2. a) Select any irrational... (answered by orca)