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Saima112 Saima112
  • 21-03-2015
  • Mathematics
Answered

what is the answer to y=6+4x and y=-5x-21

Verified Answer :

baonguyenq1999
baonguyenq1999 baonguyenq1999
  • 21-03-2015

y=4x+6
y=-5x-21

4x+6=-5x-21
add both sides by 5x
also subtract both sides  by 6
9x=-27
x=-3

plu x=-3 in y=6+4x
y=6-12
y=-6

Answer Link
eu99li
eu99li eu99li
  • 21-03-2015

y=6+4x

  y=-5x-21

=> 6+4x=-5x-21

9x=-27

x=-3

y=6+4*(-3)=6-12=-6

y=-6

Solution: (-3; -6)

Answer Link

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