Lexayyyyy
Lexayyyyy
20-05-2015
Mathematics
contestada
2x-y=17
X-y= 10
Using the elimination method
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laurisajaneserr
laurisajaneserr
20-05-2015
easy just subtract 2x from each side then divide
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mecca99
mecca99
20-05-2015
2x-y=17
x-y=10
2x-y=17
-2(x-y)=-2(10)
-2x+2y=-20
(cross out the -2x's)
-y=17
+2y=-20
y=3
(plug 3 into y to find x)
(3)-y=10
-y=7
y=-7
x=3 & y=-7
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