emilyrabbit emilyrabbit

02-09-2014
Mathematics

contestada

this is for algebra 1

My two numbers add up to 12. Three times my first number plus twice my second number is 29.

Which two numbers is she thinking of?
Show your work.

Respuesta :

TaylorBayley TaylorBayley

02-09-2014

x+y=12 -- 1
3x+2y=29 -- 2

(1)x2
2x+2y=24 -- 1
(2)-(1)
x=5

Sub x into 1
x+y=12
5+y=12
y=7

Her two numbers are 5 and 7

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