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Using elimination process what is the answer for 14x+2y=18 -7x-4=9 use steps
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2 votes
Using elimination process what is the answer for

14x+2y=18
-7x-4=9

use steps

User SteB
by
8.2k points

1 Answer

5 votes
step 1; multiple equation 2 by -2: 14x+8y=-18
step2: subtract this new equation from equation 1 to eliminate x:
2y-8y=18-(-18)
-6y=36
y=-6
step 3: substitute y=6 in equation 2: -7x-4*(-6)=9, -7x=-15, x=15/7
User BjornS
by
8.4k points
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