charlie987 charlie987

15-03-2015
Mathematics

Answered

Solve the system by substitution
x+5y=4
2x+10y=8

Answer :

Hippalectryon Hippalectryon

15-03-2015

Multiply the first equation by 2, that gives you the second.
Any x,y works.

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zebra0623 zebra0623

15-03-2015

x+5y=4
2x+10y=8

x=-5y+4

2(-5y+4) +10y=8 substituted in the equation for x
-10y+8+10y=8 distributed
8=8 combined like terms (-10y+10y)
0=0

MANY SOLUTIONS/INFINITE

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