algebra system of equation
posted by eric .
10x5y=20
7x5y=26

Eq1: 10x5y = 20.
Eq2: 7x5y = 26.
Multiply Eq1 by 1:
10x+5y = 20,
+7x5y = 26.
Sum:x = 3x+0 = 46,
x = 46/3 = 15 1/3.
In Eq2, substitute 46/3 for x:
7(46/3)  5y = 26,
Solve for y and get:
26 2/3 = 80/3.
Solution Set = (x,y) = (15 1/3,26 2/3).
Check the given Eqs and make sure the signs are correct.
Respond to this Question
Similar Questions

algebra
1)What is the 4x^2=y^2+8y+32 answer= either hyperbola or parabola 2)The graph of which equation is a circle? 
Math
Find the equation of the tangent line 5x^2+y^2=14 at (1,3). P.S: It's calculus. So far I know this much 10x+2y(dy/dx)=o 10x 10x ___________________ 2y(dy/dx)= 10x (dy/dx)= 10x/2y= 5x/y m= 5(1)/3= 5/3 y=mx+b 3= 5/3(1)+b then … 
Algebra 2
Can someone check my answers. Write the following equations in standard form. 1) x^2  2x + y^2 + 4y = 11 answer: (x1)^2 + (y+2)^2 = 16 2) 4x^2 + 24x  y + 34 = 0 answer: y = 4(x3)^2 + 2 3) The graph of which equation is a circle? 
Intermediate Algebra
Determine whether the point (1, 8) is a solution of the system 2x + 6y = 50 10x + 0y = 10 by substituting the point into each equation. So far I have: 2x=6y=50 y=502x 10x+10y=10 10x+0(502x)=10 10x+0=10 x=10 y=502x y=502(1) y=502 … 
10 grade algebra
15. In the following system of equations, what does x equal? 
algebra
Gina wrote this system of linear equations: 2x + y = 7 4x + 5y = 11 Which of the following shows the first four steps that Gina could have used to correctly solve this system for x? 
math
1. Gina wrote this system of linear equations: 2x + y = 7 4x + 5y = 11 Which of the following shows the first four steps that Gina could have used to correctly solve this system for x? 
algebra 2
Solve each system of equation by grpahing? 
college algebra
hw to solve equation in the real number system, x^4 +12x^3 +10x^29x+9x+22=0 
college algebra
how to solve equation in the real number system, x^4 +12x^3 +10x^29x+9x+22=0