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brittanycandace
brittanycandace brittanycandace
  • 30-04-2014
  • Mathematics
Answered

We are doing adding and subtracting these eqations by elimination! Need Help! 

3x+4y=11
6x+4y=-10                                                       4w+122=10
                                                                      -4w+2Z=50

Verified Answer :

ionaham ionaham
  • 30-04-2014

3x+4y=11. x-2
6x+4y=-10.

-6x-8y=-22
6x+4y=-10

6x cancels out
-4y=-32
y=8

sub:
3x+4y=11
3x+4(8)=11
3x+32=11
3x=-21
x=-7

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