SOLUTION: x+y=20 30x+50y=880

Question 585565: x+y=20
30x+50y=880

Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
1 x + 1 y = 20 .............1
30 x + 50 y = 880 .............2
Eliminate y
multiply (1)by -50
Multiply (2) by 1
-50 x -50 y = -1000
30 x + 50 y = 880
Add the two equations
-20 x = -120
/ -20
x = 6
plug value of x in (1)
1 x + 1 y = 20
6 + 1 y = 20
1 y = 20-6
1 y = 14
y = 14

RELATED QUESTIONS
10x^2-30x+20/x^2-1 (answered by Mathtut)

40x^2+30x-20 (answered by lenny460)

30x+50y-100=0... (answered by stanbon)

graph 30x+50y-100=0... (answered by drj)

find any intercepts then graph the equation 50y - 30x =... (answered by MathLover1)

x+y=57... (answered by drj)

Solve system of 3 equations: 15x-25y+z+10=0 30x-50y+2z+20=0 90x-150y+6z+60=0 Can... (answered by Alan3354)

log[30x^2+x]=0 (answered by nerdybill)

P(x)=... (answered by stanbon)