Posted by **daniel** on Monday, May 26, 2008 at 3:37pm.

the sum of two numbers is the same as four times the smaller number.if twice the larger is decreased by the smaller,the result is 30.find the numbers

- algebra -
**Reiny**, Monday, May 26, 2008 at 4:28pm
let x be the smaller, and y the larger

x+y = 4x

2y - x = 30

solve the two equations.

I would take the first down to y = 3x and use substitution

- algebra -
**tchrwill**, Monday, May 26, 2008 at 4:30pm
From the first statement, x + y = 4x, or y = 3x, x being the smaller number.

From the second statement, 2y - x = 30.

Substitute the first into the second and you are on your way.

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