SOLUTION: if 2x+y=1 and x=1/2, what is y?

Question 621377: if 2x+y=1 and x=1/2, what is y?
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
If you substitute that value for in you get
,
which simplifies to ,
which means
You know that if a number remains the same, nothing (zero) was added or subtracted.
If you want to show that as algebra, you may write
--> --> subtracting 1 from both sides of the equation and simplifying.
RELATED QUESTIONS
Graph lines y=x+2 and y=2x-1. What is the intersection point, if any? (answered by Nate)

If y=(2x-3x^2)/3 and x=2a+1, what is the value of y when... (answered by Fombitz)

if x=-1 and y=2,what is the value of the expression... (answered by fractalier)

if x=-1 and y=2 what is the value of the expression... (answered by Alan3354)

if x=-1 and y=2 what is the value of expression 2x^3 -... (answered by Alan3354)

1.if x+y = 2 and x^2+y^2= 2 what is the value of xy? 2. if x=-5/8 and y=-1/2 what is the (answered by ankor@dixie-net.com)

If {{{1/x +1/y =10}}} and {{{x+y=2}}}, what is the value of... (answered by ikleyn)

what is the x and y intercept of this quadratic equation y=2x^2-6x+1 (answered by MathLover1)

x+y=1 and... (answered by rapaljer,mananth)