ghandiboy ghandiboy
  • 03-02-2017
  • Mathematics
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Y=x+4 y=3x substitution

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abby1351
abby1351 abby1351
  • 03-02-2017
x+4= 3x
-x -x
-----------
4= 2x
-- ---
2 2
--------
x=2
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