rose1986 rose1986

07-09-2016
Mathematics

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the difference between two numbers is 12. Four times the larger number is 10 times the smaller number. Write a system of equations

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jlomonte jlomonte

10-09-2016

x-y=12
4x=10y

x=12+y
substitute
4(12+y)=10y
48+4y=10y
48=10y-4y
48=6y
y=8
x-8=12
x=12+8=20
x=20

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